I've never had a Yam with ABS but both my current bikes have it and to be honest won't buy another without it.
You have to decide why would you want it, me, I use my bikes to go to and from work as well pleasure, so when the tyres are cold and the roads are wet you don't want to lock up but still need maximum breaking in the safest possible scenario.
Honda bikes will all have the option available including the Blade in the future, its the safest way to go.........that only my own personal opinion for what its work.
As and when I get my FZ1 Fazer it WILL have ABS be sure of that.
GB