From both the exhibitionist and / or voyeur position.
My opinion - so much more fun to watch a hunky guy dancing and having fun then the same guy standing in front of a mirror flexing. But then again that's not exhibitionism it's narcissism.
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The philosophical and physical theory that argues only the present moment exists is called Presentism. Time travel, at least in the way that most people think of it, will never be possible. There is only the infinite now.
One theory, the one that I think is most likely, is one that I summerize by my expression - 'Time is a ruler not a road'. Meaning we can EXPERIENCE what we think of as the passage of time. We can remember the past and imagine the future. We can predict what will happen next, we can view cause and effect, etc. But we can't jump into a "time machine" like in the H G Wells story.
The 'ruler' that I refer to is not like a king but LIKE a device that measures distance. Measuring what we perceive as the passage of time, a device known to all as a clock.
You might wonder about a space ship that travels at near the speed of light. Don't they travel in time, in a relative sence they do. But remember, for them time passes at the same rate as it does for the rest of us. They are still always in the universal now. If they return to earth, everyone they knew may be dead, but their NOW will be like the NOWS of everyone else they find on what we perceive as a future earth.
Obviously I'm no Newton or Einstein but this is my rough idea about "time" and "time travel".