This is the attitude that results in very few left handed firearms. I'm a southpaw, it may be a "right handed world", but I can and have beat it into submission.
There are revolver options that work for lefties. Single action and top break revolvers are fine. And, Charter Arms makes a left handed small frame .38 spl.
Sadly in autos, no one makes a left handed one any more. But, one of the main reasons is the attitude above. If we as left handed shooter would purchase left handed guns, more would be made. But the few that were made suffered poor sales and ultimately failed.
Glocks and similar semi autos work pretty well, but you still have to deal with the case ejection. On those, just forget about the slide release and learn to rack the slide if you run dry. Your right hand is already off the grip, so manipulating the slide isn't a handicap. Just add an ambi mag release and your good to go.