No don't force them.  I try to offer it as an option.   If someone wants to buy my stuff I ask for bitcoin.   Eventually you get people to use it.   Worse case is just not selling at all but again your going to keep trying until you get one person curious about bitocin.   I let bitcoin be an alternative option when it comes to money transfer.

If you force them it will lead into heated arguments and would never use it at all.