No, there were various theological and practical (inheritance) grounds, I don't think anyone can find evidence for this being an acknowledged purpose. However it could still be an unspoken purpose and it could still work that way. I actually find it very reasonable, given how geeky Catholic priests and monks tend to be, they are prone to typical nerd traits like hair-splitting arguments, they are pretty much like the nerds who can't get some and thus better to rebrand it as a virtue. Just it was not an explicit, outspoken purpose.
I should also say, there were no sexual rejects in the modern sense. Just have a wealthy father, someone will arranged-marry their daughter to you.
This thread is for asking any questions that might seem obvious, tangential, silly or what-have-you. Don't be shy, everyone has holes in their knowledge, though the fewer and the smaller we can make them, the better.
Please be respectful of other people's admitting ignorance and don't mock them for it, as they're doing a noble thing.
To any future monthly posters of SQ threads, please remember to add the "stupid_questions" tag.