I agree, it is NOT 4 times the work at all, it is not even 2 times the work. In fact I think it is easier to have 2 than just 1 at times. Mainly because they play with an entertain each other a lot, and yes they fight a lot as well. It is easier for my girls to sleep at night because they share a room with each other and don't get scared, things like that. Mine are 3 years apart.
As far as wondering how you do it with 2, well you just do it...lol Its much easier IMO to go from 1-2 kids than it is to go from 0-1 kids which was a total shock to me!
Marilyn,psych RN. Homeschooling mom to Taylor (12) and Lauryn (8)