I'm a commitment person. Always have been, always will be. But I just don't see what's wrong, if a commitment partner isn't on the horizon, to get what you can from a nice, decent, friendly, cuddly non-commitment person. Which is what I take it you mean by a "friends with benefits relationship."
Being alone alone is really bad. And commitment people, to one's own specifications, don't grow on trees. Having a "friends with benefits relationship," by definition, doesn't stop you from going off and latching up with the next commitment person you find. I see no reason to feel badly about this.
To advise a person in an FWB relationship that she shouldn't do that and should stick it out for a commitment person or bust, well, to me, I'm sorry but that's a kind of bullying. A person can be down, can be hurting, and she may well not be able to lay hold of a commitment person at the moment. In such situations, an FWB relationship is far better than nothing, and by no means to be denigrated as in any sense wrong.
Take care.
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We must love one another or die.
W.H. Auden
We must love one another AND die.
Ygrec23