I agree for the "hard" needs that are, quite literally, as universal as can be imagined. Sex, however, is not one of those. The very existence of asexual individuals who live out a long and happy life is a testament to this.

There are no a-shelter, a-money, etc., individuals who simply do not need those things. There are people without those things, yes - and I agree that their existence is objectively worse off for it.

Sex, on the other hand, can be entirely absent from a person's life and not necessarily impact it.

So I don't think I accept your assertion that sex is objectively a necessity for a high standard of life. It currently behaves as one, because we generally accept that it's desired so deeply by so many that it qualifies as a need - and for the most part, that might well be true. But there is still the case to be made that "having sex or not" is only as much of an impact on one's standard of living as one's worldview dictates. This is not true of other "hard" needs, as pointed out before. Ie: My philosophy on sex can yield an asexual, long, healthy, and happy life, but my philosophy on shelter cannot lead to a homeless long, health, and happy life. (Happy is debatable, sure.)