I was not ready to start a family in my 20's even though I was in a stable relationship with my now dh. We were both career orientated and wanted financial stability first. We were also enjoying our time together and the pubbing, clubbing scene. I know I wouldn't have been as good a mum as I am now had I had children early. I had my first ds at 32 and my last 3rd ds at 39 and no regrets. I wanted to be done by 40. There was no difference in the recovery time as I got older. The only thing I found was I didn't cope as well with sleep deprivation after having number 3 when having those rough nights but now he is 18 months, over that baby stage, more settled now the teething is just about finished it's great. If I wasn't turning 41 this year and didn't have to do ivf (we are done with the expense) I would have considered a 4th. Mine and dh's energy levels haven't decreased as we have gotten older, we are both very fit and active.