I have 22 months btw DD1 and DD2
2.5 years btw DD2 and DD3
Right now they are 4, 2.8 and 3 months.
Like shagmund, I really love it.
I found one baby stressful and tedious, but I thrive on the intensity of having a baby and a toddler (and a school-aged child this time).
I totally agree about getting out every day - I go to toddler group most days.
Also getting involved with stuff - volunteer at toddler group, PTA (I'm a but if a joiner). Being busy is fun.
Our home is a children's house - toys everywhere, DD1's "art" on the walls, which I know some object to, but it makes life easier.
Also I went back to work when DD1 was 3.5 months, DD2 was 7 months. I'm not sure how long I'll stay off this time.
If you are miserable and bored and lonely (and I was first time), returning to work is worth considering.
Mine are all good sleepers though, so I've never been doing this while massively sleep deprived. That really, really helps.