If you shoot a lot, as many here do, the economics of reloading still make sense. I try to average 1k rounds a month (and that's probably light compared to many here). The overwhelming majority of what I shoot is .45. Winchester White Box is running around $23/100 if I recall, and I am reloading .45 practice ammo at around $12/100. Out of the 12k rounds a year I shoot, probably 9k of it is reloads, so I'm saving $990 a year.
I am a careful reloader, and I have never had an issue in the 8 years that I have been reloading, so I have saved $7920 in ammo cost. I shoot primarily 1911's, at an average value of probably $800, so in that time I could have replaced 10 guns if necessary. Combined with the fact that I am getting what I consider to be higher quality practice ammo, those economics make sense, warranties be damned.
I have also never used a factory warranty on handgun, so I really don't give them a lot of thought anyway.