Singles living ish actually more expensive because the amenities and supplies or appliances cannot be shared. Some nations literally gib additional benefits to singles or tax married ppl more... Sinkieland ish exactly the opposite.
Coupled with the fact that it makes no sense to get married without chewren( => getting pwnz by WC for no reason

).
Sho the proper balance typically ended up with 3 route.
1) Singles, trade off expensive self living with freedom and living with inner peace
2) Married with 1 child, trade off freedom with shared expenses and a child to experience life
3) Married with NO child, trade off some freedom with shared expenses and get high life but no experience of life with chewren