Pacman, yes it may be hurtful to somebody single to quote in their face halachos which when rubbed in their face upset them. The fact that they are true halachos does not mean it is not insensitive to state them coldly to a single unless they are immediately relevant.
I also believe it is very insensitive and presumptuous of you to state that in the vast majority of cases it is a male single’s fault that he is single (and therefore I believe it IS comparable to a disabled Kohen or blind man) How on earth can you know that? Have you carried out a proper study to back that claim up? I think you and cherry-bim are treading on very thin ice here with your being very very maikil on hilchos bein odom lachavero.