Actually I used to be quite a revolver fan in my childhood (in the 80ies), with semiautos being kind of secondary stuff for the bad guys, Russians and thelike.
Yet, due to their superiority in terms of compactness and capacity, I switched to semis when I grew older and was finally able to get my own guns.
All considered, still the revolver would be the better gun for most home defense scenarios, being easier to handle and to be kept at hand ready. However I as well reckon its numbers are dwindling compared to the semis.
"Get off of my lawn!" Walt Kowalski
. Savage Axis XP (.223 Rem)
. G17 3rd gen. (9mm)
. Taurus PT22 PLY (.22lr)