Really good question. I've always treated my boards well. It depends on what you skate too. I am light footed, I try to only skate good smooth stuff. I hate when the edges of my deck get all chewed up on rocky concrete, it seems to lead to cracks and breakage. I used to wax the sides of the board so that when I landed primo It would shoot out. I bought this zoo york aaron suski model on my birthday in june. It hasnt cracked or chipped yet and I skate avidly. I do not stomp my tricks hard either.
You always want to get a board that just comes in, skate it lightly a couple days and let the wood stiffen up a bit, DO NOT leave your boards in a truck or hot garage, keep them somewhere where it is always a moderate temperature, and never let it hit a fence, run for your life to catch it. I would rather hit the fence than have my board chip.
I remember on my 18th bday I had to go to court at 6 am for a skating infraction, after that staleness was over. My pops took me to the only shop around here which is zumiez and it is hardly a shop. They keep their boards in there for years. I wanted that tom penny's friends deck, I had always wanted it as a child ever since I had seen it in CCS. I bought it and was stoked, I got to the park and I slipped out first trick, it hit the fence and chipped so bad. then a month later it broke on a half ass tre.