Both. I use the kickstand several times a day and it has become indispensable. I honestly use the kickstand more than the power button (though I'm cheating since I use the volume keys to turn on the screen
). So whatever I pick as my next phone, it must have the kickstand.
I love my Evo. I have everything automated through Tasker, the screen is the right size, and the performance is still more than acceptable. I've always considered myself techie and I used to keep up with all the new phone releases and new OSs. But about 3 months into owning the Evo I stopped caring (except for the Evo 3D, I was excited about it until I learned there was no kickstand).
Hell, if the memory wasn't so limited I would have no reason to upgrade at all. But I've reached the point that in order to install something new, I have to get rid of something else.