For these reasons:
You often have to travel 2 hrs into bumble-bill hickvill just to get there.
You have to pay to get in
Often you have to pay for their crappy paint which is jacked up
You have to wait for refs to start a game
The car ride home sucks cause your all dirtry and messing up your interior
Why finding your own paintball spot near home is better:
You can play much more often
You dont have to pay to play
You can buy your own paint
You can start games when ever you want
If you want to sit out a game to clean your gun, you dont fell left out since games aren't 45 min apart
Guerilla paintball rulz