It really depends on what your collection consist of and when you acquired it. If you possess all the top 15 pins and purchased them with in the past 2 years CQ or restored, then your rich by my definition.
On the other hand you could be picking up B-C listers or got into the hobby before prices sky rocketed and have a bunch of pins and not be considered rich.
I do think that most here are doing pretty well and that over half fit into the 100k+ HH income range.
RobT makes a good point as well. Someone making 100k in one area of the country if not as well off as someone making 50k in another area. Costs of living vary drastically so, income in not really the best measure unless you get up to something like 500k+ range, where you would be rich most anyplace. Its also relative to ones perspective. I meet few people who consider themselves rich, whether they are or not. I guy making 500K thinks the guy making 1M is rich and the guy making 1M thinks Donald Trump is rich. Virtually everyone in Africa thinks Americans are rich no matter what the HH income is.