I don't know if this is true but I've found it to be the case in my own life and with my friends that men won't put up with it for long is you aren't around much due to work or at least far less than men do. Its ok for a fixed period but when your work takes you away month here a week there etc they just seem to hate it and not tolerate it even if no kids are involved.
I have a theory that it is because when men seek a female partner they are looking for comfort and care, your physical presence while women are much more likely to tolerate time apart if it is for work and building a future together.
I don't know if I am right it just seems like that to me, so what do you all think?