Ever since I was little, I saw this as an example of evolution. If the female animals finished first she'll pull out and walk away thus reducing the chance of getting impregnation. So the males that tend to finish first and the females finished last are favored by evolution.
the ideology of male first female last is wrong imho. once men reach orgasm, they will go flaccid quickly afterward (unable to penetrate) in most cases, so there will be little chance of getting the women reach orgasm. but when men let women finish first, then you can make to the finish line very quickly, you are doing the job remember? and since men are naturally "fast performer". she's just lying flat there. and her tool will be still good to go as long as you (or her will) want it.
dont mention handjob, its out of question, in other word if we want to cheat orgasm (i mean getting orgasm without using genitalia) , thats an easy thing to do for both men and women
and vagina will contract and grip firmer at some duration just before and after female orgasm, this will help men to orgasm faster, ideally at the same time or quickly after women orgasm, but if male is too fast, then this can leave an emotion problem to the female. and with proper technique, you wont bored her after her 1st orgasm, you can move on to the 2nd, 3rd etc until its worn out. dont compare animal with human, from my observation they are not the same, take for example cat (you know how). about impregnation... cum outside! if you dont want.