Short answer, Why not?
Slightly longer answer, for me anyways, suppose ive always had some sort of breasts/ manboobs or whatever you want to call then from puberty thanks to the gynocomastia and being a tad on the portly side, was told was down to my steroid medication to control my extreamly mild asthma when i seen a Dr when i was 14 about them, which I am no longer needing medication to control as ive kinda grew out of it, was told they would receed as i got older, but alas that wasn't the case, don't fancy removing them with surgery so recently thought why not grow them, i've already got he foundations there, and they have got slowly larger over the years( which may be down to weight gain which is somthing am also working on through diet) and then somehow stumbled on here and well the rest is history as they say.