Blimey. You've been cycling for ten years and covering thousands of miles a year and you get jumped on!
Not going to mention that I've been cycling 2 months and can't go more than 15 miles in a go, and yet I've started saving for my first carbon bike!!!
The way I figure is that if I cycle through the winter - even if on the turbo - and into spring, I'll deserve a nice new toy come the summer, so if I start saving now, I'll have a great budget come the time. I won't warrant a carbon bike, and it probably won't make me any quicker - saving three pound off the bike won't matter when I'll probably still be carrying about an extra thirty around myself (if all goes to plan!).
But who cares. I want one. And it will make me quicker, actually, because I'll ride it more.
To be fair, though, I get the point a few people were making. I bet if you put me on your Boardman and you on my Trek 7.0fx, it wouldn't affect the outcome of a mile dash in the slightest. But on the other hand, there is reason why nobody rides le Tour on a Trek 7.0fx. Bet Wiggo wouldn't have come close if that's what he was on. If you are genuinely close to the people you ride with, and you see them gaining on you when they upgrade, then maybe it is buying them a slight edge. No doubt, you could make up the difference with more training, but I don't see the harm in keeping up with their level of kit if you have the wherewithal.
The trick, of course, would be to buy the bike *and* train harder - turn the tables on them
Hope you continue to enjoy the bike!