you seem very hung up on the children part of it. children can be a hinderence, and yes your old life is gone, but a brand new one starts where you have created life, and you get to care and mold that life into something(hopefully) amazing and happy. children are not evil and are not a punishment of sex.
i do not see your logic unfortunately, you have not experienced it, but state it will turn you into a terrible person. it is a joy with the right person, why can you not see that or accept it?:blink: