Life is alot easier with one. If the child has a nap during the day then that is your free time. If the child goes to bed you have time to yourself. With 2 it is harder cause if one naps during the day the other may nap at another time or not at all. I have a 17 month old, 7 month old and 5 months pregnant with no.3.
When my 2nd was first born I found it easy as he just slept most of time and I was big headed that it would be an easy ride. Then he started being more demanding and it was harder but i'd still say its really ok- I must have good kids! Lol. They both take afternoon naps together and both go sleep at 7.30 pm til 8am.
With no.3 on the way I know I won't have a moments rest until they are all in bed. The moral of the story is the more kids you have the harder it gets to have free time!
I wouldn't change it for the world though. I love giving all my attention to my kids.