well ive been breaking decks more lately, maybe like one every 3 months. i havent payed for replacement parts in forever though, because i have a bunch of extra shit laying around. to prolong the life of your scooter, definitely lock the folding mech and reinforce the fork. other mods i think arent really as important, except maybe reinforced deck. dont throw your scooters, dont leave them outside, buy rad bars, make sure everything is always tight, make sure no bolts are missing, thats about all i can think of