some thoughts

supposition: reincarnation theory is correct

the implications:-

universe is a set of rules. thus they must be there for death and for birth as well.

every time anyone dies, 9 months after his is born....(gestation time....correlation with time is resumed)
whenever two people have sex which results in conception....a person or a life must die

which means you have to commit a murder if you want to bring a new life into this world
there fore you must either not procreate or do an awful lot of good work so as to make your karma
break even from a murder.
thus swamis and Buddhist monks don't indulge in it so as to make it easier for them to have enlightenment ...which
must come at an good level of +ve karma
this means that they are making it easier for them to have this enlightenment.
watch mr. nobody.
people who live domestic life. are richer in karma, that's why they get to feel the pleasure in love and procreation
ascetic people are poorer in + karma, cant afford to use their + ve karma to balance out the murder involved with
sex. one can have sex and still attain enlightenment.

converse:
if people dont have sex at all, no one would die. and there would be no renewal of souls, human race as a whole
will have attained enlightenment that day. and a whole new kingdom would have started. we are far from that day.
but if it were the case that sex would become obsolete. god will be found. it would be revealed whether he exists or not.
Jehovah's kingdom kind of thing....

how do you stop a race from having sex, considering that souls are for individual species?