I have 22mths between each #1 and #2 and #3, there will be a slightly bigger gap with #4 (26mths) due mainly to physical and mental reasons.

It is hard physically when they are young, and you are dealing with a new baby. But the 'new baby' becomes the easy part, because you have been through that before - it is the new ages and stages that test you. I wouldn't trade it for the world, because they do all paly so well together and learn so much from each other that they simply can not learn on their own. The funny thing is that just before I found out about #2 (a real oppsy baby), DH and I had just decided to have a BIG (10yr) gap between the first and the second). I guess God had other ideas.

There really is no right or wrong answer to any of this. Your fears and anxieties are normal, and based on some truths, but the other truths about the positives are also real.