realsomeone you said "we are encouraged to marry just one.."
read the verse below..
3. And if ye fear that ye will not deal fairly by the orphans, marry of the women, who seem good to you, two or three
or four; and if ye fear that ye cannot do justice (to so many) then one (only) or (the captives) that your right hands
possess. Thus it is more likely that ye will not do injustice.

First the man is encouraged to marry upto four if his economics allow then only one if he cann't
So what is encouraged and what is discouraged should be clear.
Its only the economics the only condition otherwise the Prophet too had emotions..