is this a trouble with some muslims or am I missing something?

what is the basis of either of these practices, and what are the arguments for and/or against?
i thought religion would have one ruling as something of this nature.

sells the property with profit in fixed installments, do you know how these installments are calculated? call it profit, call it interest, its the same thing.

yeah but there is a little bit of a difference between a contract to get married which is a step taken by adults out of their own free will.

Dont think I am against this, to me its just funny how people use the whole topic of oh we cant adopt because the kid will be na mehram. I think in the end it goes to intentions. teh argument seems funny coming from people who have other na mehrams mixing casually in their family events and homes.