If we're talking about a very small sampling, then we might be able to indict the group of guys.  But in situations like this, it's totally impossible to indict all males for not (ostensibly) being attracted to X.  Don't misunderstand, I have an 18 year old daughter who has hardly dated and I can empathize with what you're saying, but it's not helpful to try to put this on boys/men.  Boys and men are what they are ... and there's some really strongly hard wired rules that govern attraction.  A girl can either complain a bunch about boys not asking her out or alternately she could accept reality.  Most boys are attracted to y, z, whatever ... she could try to be more like y/z or she can wait until a boy comes along that LOVES x ... but nobody can reasonably complain that 50% of the population isn't more attracted to what they want it to be attracted to.

My point is just that it doesn't make sense to blame males for not being more romantically or sexually attracted to X.  The "problem" can't be with all boys.  I'm sure the OP's daughter is a really great gal, just as I truly think my daughter is a fantastic gal, but I'm not about to try to indict all males for not asking my daughter out more frequently.

Humanitarian missions are awesome and admirable, but they're hardly romantically or sexually attractive.