Only read the OP, yanbu, of course plenty of women don't put on shedloads of weight.
I put on very little with ds1, straight back to normal clothes etc. I was 29. Ds2 I put on more, lost it quickly.
Ds3 I put on a lot in the first tri as I was feeling like shit, but I had good meds this time so I could actually eat and did so overly to stop the nausea.
I put on about 2 1/2 stone all in, and had such awful SPD that I could hardly move round the house let alone exercise, I frequently cried with the pain even sitting down for most of the day.
I'm 39 now. I don't know if it's that what made the difference but anyway it was really hellish and nasty, and I hated it. I literally couldn't move around.
So it depends. I felt I'd very little control over my weight and had better things to worry about frankly.
Ds3 is 4 weeks old, I'm a stone down, I've startedwalking as I CAN walk again now - also I didn't have a car the first two times so I'm sure that contributed.
I'd hate to stay 'fat' after having babies, but really, people are lucky or they aren't. Who is anyone else to judge.