It all depends on what you do with the bike, and how confident you are on yourself to be able to modulate the brakes in an emergency. A friend of mine, very experienced rider, just dropped his RC51 in the most stupid of ways (his words), when he got caught off-guard by a red light... he had plenty of space to come to a stop safely, yet he grabbed too much front brake, locked the wheel and went down like a noob. If he had ABS, he would have kept it on two wheels. Yes, ABS can be a bit intrusive at times, but for regular use I think the benefits far outweigh the negatives.