Babies in your 20’s or 30’s

Ok. I know there may be some debate on this. But anyway here goes. You know your mother always said or at least mine always said if you get pregnant etc etc I am going to kill you. 

Well I waited and waited, I did the school thing, did the career thing, did the marriage thing etc. and now here I am at 30 something, single and just had my first child and seriously I now wish I did this alot earlier. I wish I did it in my 20’s as I just don’t have the energy and stamina needed.  Its hard. Do all mothers feel like this or is it just because I am older?