Framing sexual intercourse for the purpose of reproduction as a "need" and therefore heading into a "right" needs to be very carefully explained and disclaimed.
There is no right for people to be provided with other people to make babies with, if they can't find someone to do it willingly.
Globally surrogacy has exactly the same issues as prostituion IMO, in the UK the commercial side is reduced as only "costs" can be paid, I think it's recently been banned full stop in ?a scandinavian country, the issues with rich people going to poor countries and paying women to be incubators is really disturbing.
So when talking about the right to family life / the right to have children it's about the state not intefering with letting people get on with having babies, and it's not about everyone having the right to have their own genetic baby full stop.
Interestingly, there was forced pregnancy in Romania under Caecescu (sp) - where would this fall under the human rights stuff? Back to reprodctive rights I suppose.
Framing anything that involves using someone elses body whether for sex or carrying a baby as a "need" and then onto a "right" is dangerous and of course mainly for women.