I have just counted the contents of my camera shelf and it contains 6 Canons and one Bronica that I bought over about 35 years, plus one Datematic and a Nikkormat that I inherited. Of course there is also the E510 I actually use (not to mention the 500 I gave away to my daughter) That makes an average of one camera every 4/5 years. There was a brief flurry at the beginning of digital era when I was chasing features but the E510 is so good that I expect it will last the usual 5 years before I move it up to that shelf.