I really believe in having both. There are times it's just so much simpler to pull out my acoustic and get a few minutes practice in, without having to worry about warming up my tube amp, finding my cords, setting up the right tone for my amp and pedals, etc. Also, my acoustic is a very intimate friend at times, really just speaks to me.

My electric takes a lot more preparation, and unfortunately I have five room mates, so have to use headphones, adding yet another cord tangle. But there is a lot of material I can't do on an acoustic, especially full step bends, and I can play a lot longer and faster on my electric without getting hand fatigue.

Getting geared up for electric is a lot more expensive!!!