I'm working towards my CFI myself, so take this with salt.
Personally, I'm looking foward to it, I think instructing will be rewarding both in terms of experience and in seeing new pilots learning the skill of flying helicopters.
Sure, the pay stinks, the hours are long, and some flight schools can be hard places to work, but the rewards outweight the problems as far as I'm concerned.
Being a CFI is not my end goal, but a stepping stone, but that doesn't mean I cannot enjoy those years and learn from them, while providing great instruction to the next generation of helicopter pilots.
Whirlyflyer