Would I really wish for a delete button?
I don't think it would be a great idea. 
I am person who value memories most, whether they are good or bad.
Also, what for are memories if you were able to delete them? 
There wouldn't be memories.
And life would be as dull as you can imagine.

I wouldn't wish to delete some people as well, whether they've hurt me or not.
If there is for real a delete button,
I would surely delete those who hurt me immediately
And then who's left?
Those unfamiliar faces I come to cross each day?
Well, that won't be a very good idea.
Because those who I love most are the ones who constantly hurt me
And the ones who are prone to be a victim of my button.

Feelings. I never want to delete feelings, even some feelings
Yes, sometimes I wish I wasn't hurt
Sometimes I wish I become numb at anything.
But then, feelings is what makes me human
And feelings are wonderful things.
Because they make you appreciate everything around
and they help you classify what's the difference between someone you felt something with (whether hatred or love) and someone you never felt anything with.