If you had a low libido would you have sex with your partner even if you didn't want to just for their sake?

Absolutely. Partnership means accumulating each other need.
Yes. Agreed it would be more difficult; better to see if your libido can be improved. This can usually be improved with hormone replacement therapy. A small amount of testosterone usually works wonders for this; i often have to add Progesterone in with it as well. These bioidentical hormone replacements have other benefits that make them worthwile as well. Check my website for more wwwmedac4u.Com.