A Reason for Everything?

Why does everyone need a reason for things that other people do? I have to say if it isn't very obvious why someone is doing something at least slightly out of the ordinary, then most people scrutinize the decision; endlessly. And if you don't give an answer that makes sense in that person's estimation and experience, you are deemed a dangerous individual to their own little universe. I mean dangerous as in someone they don't particularly like or dislike but are made uncomfortable by because they don't quite understand them.

Personally, I like people I don't understand. I find people that fit my logical flow to be somewhat boring. But why don't people just do things for no reason? Well, I shouldn't say no reason...there is a reason for everything. But why can't it simply be

"For shits and giggles"
"Because I felt like it"
"Because I wanted to"
"For kicks"
"For the sheer fun of it"

without garnering wary looks and uncomfortable silences or acting like you are a sideshow?

Human Nature

I am now in the best physical shape that I have ever been in. This actually includes the time in college that I was swimming 50 laps every other day and training to be a boxer. This should be a source of happiness for me. And, to a certain extent, it is. The only issue I have is the timing of it. I basically need a breakup to occur in a long-standing relationship to motivate myself to reach another level of fitness. It also has to do with circumstances that allowed me to find a workout regimen that is unlike any other I've tried. But I find it odd that I can only find the motivation to do more than just maintenance after I am suddenly not with the person that I should have been lifting to look better for. I guess human nature does come into play here though. The threshold is simply higher when something is new than when it is old.

I need a reason. I always need a reason. For everything.

I guess human nature is the reason for this one. That doesn't mean I have to accept I can't change that about myself though. The only thing that remains to find out is the trade-off and whether I'm willing to give it up in order to change.