Am I wrong for not wanting my MIL staying with us for 4-5 months of the year?
My wife and I live in a different country than our mothers. Before we had children our mothers would visit us once a year or once every two years and stay with us for a few weeks. We also visit our home country every year.
When we had our first son we agreed that he was too young to go to the nursery at 9 months when my wife went back to work so since her mother was retiring she would come live with us for a year to sit with him while we worked. My MIL is not very pushy and does not interfere in our couple life but she has some quirks that makes her hard to live with, which I will mention later.
When my son went to nursery she went back home (she did not do this for free, we paid her mortgage off as a sign of appreciation for her help). That time she stayed with us for about 16 months non-stop.
We managed fine with our son, we did not need any help, but since our second son was born 2 years ago my wife keeps bringing her mom over "to help" but we actually do not need any help. He goes to nursery full time, we have a cleaning lady who cleans our house and all my MIL is doing is cooking and ironing. That's it. I work from home so I stay with the kids most of the time, I take them to nursery, I pick them up, I cook when I can or if my wife cannot do it. Over the past 4 years I think my MIL lived with us for about 2-2.5 years, 2-3 months at a time, sometimes for longer intervals. Over time the little things she has started getting on my nerves (constantly debates with me on things she has no knowledge about and brings stupid arguments to win, constantly interrupts my work by coming into my office unannounced and without knocking to ask about menial things even though I am in meetings, has rude comments, treats me like a child mentioning that how would we cope if she wasn't here to help us, gives clearly bad advice that is not even asked, etc) , I never complained until a few months ago when I told my wife I would like to rely on her mother's help as little as possible from now on. She said yeah, no problem. Then proceeded to bring her back for 2.5 months. I again told her that I am not comfortable living with her mom and I would really appreciate if we could be by ourselves as much as possible since we do not actually need any help and we manage fine on our own (trying to be diplomatic about it).
Recently I had some medical issues and I need to have surgery next month so we agreed that her mom will come to help with the kids while I recover which should be 2-3 weeks. We bought plane tickets for her last night but when I asked how long she wanted her to stay she said it would be good for her mother to cover the summer holidays too...so about 3 months. Even though our youngest has full time paid nursery and our older has the option of holiday club and I can manage with him at home while I work if need be. I then said I would prefer it if she didn't stay with us for so long. Then my wife got really upset, we had the worst fight, said that we owe her mother and that I am not grateful for all she did for us, all the help she gave us. I lost my temper as well, which I now regret and brought up stuff I suppressed for so long, how she brought her mother with us on all our vacations without asking me if I am ok with it, how she always takes her side, I can never say anything to her mother (even though many times does dangerous stuff like forgets to unplug the iron she used for ironing or forgets a pot she put on the stove to boil and then watches TV and the water boils to nothing and the pot just gets hot red, risking a fire. And when I said something to her, to be more careful in the nicest way possible my wife told me off).
It is also inconvenient for her to live with us. We had to convert one of our smallest bedrooms into a home office for my work and we only have 3 bedrooms left. So the youngest son has to co-sleep with us so we can keep what should be his bedroom for my MIL. This is very disruptive and I think we would benefit from moving him into his own room.
I really think we can manage just fine on our own and we do not need MIL to help with anything and frankly I want to not live in the same house as her, maybe that is one of my faults, that I feel more comfortable with only my family. I am grateful for the help she gave us but I do not feel we owe her anything (since she mentions how much she loves staying with us and she admits she doesn't do much when she is here anyway) but now that I had this argument with my wife I feel guilty and wondering if I should be more tolerant or should sacrifice some of my comfort to allow her mom to come and "help" more often. I guess I am feeling pretty shit that I made my wife feel bad and I know she must feel awful being caught between the desire to have her mom closer and me being unhappy while her mother is here.