I had my carbon road bike at service and the BB bearings (again) needed replacing, according to the mechanic, the drive-side one was hardly spinning and the other one also pretty much done with. Can't say I didn't see it coming since I had some noise before, so I accepted it.
However, I own that bike for 4 1/2 years and as far as I can remember, this was the second (or even third) time that the bearings needed replacement, plus one or two stops at the LBS during season where they just took the BB out tackling some noise, regreasing it and handing the bike back. I don't have the bills but even assuming 2 replacements means I'd get less than 10k out of one set, the bike has done about 25k in total, it is a Ridley carbon frame, FSA BB386Evo BB, FSA BB86 cranks.
Talking to the mechanic, I asked if that kind of bearing turnover is feasible and he said pretty much yes, it is normal that bearings wear out every couple of thousand kilometers, I could have it even worse on some Rotor parts lasting about 3000k.
I ride about 4000-5000 km per year, pretty much exclusively in dry conditions, no winter riding and on good, clean roads, so no particularly bad conditions for a bike to operate in. No jet wash or dirt riding that the usual seals shouldn't be able to deal with, in my opinion.
Is the mechanic's statement feasible or are they just trying to sell their part of the story so that they have a programmed BB service every 1 or 2 years? Shouldn't bearings last a bit longer? I looked around in some related posts here and think this shouldn't happen under normal conditions on a well-serviced bike...
I know that some of the renowned Bicycles SE users will soon reply with "Welcome to the wonderful world of Pressfit" but can I take their statement for granted or should I rather look for somebody else to look after my bike? Primarily another specialist bike shop willing to diagnose deeper issues such as uneven BB holes, causing a bad fit and eating away bearings for breakfast?
(I'm watching quite a few YouTube channels which are pretty invested in fixing BB issues for good but I'm afraid such experts are harder to get hold of here in Austria than in the UK or the US. My LBS wasn't like "yeah, sure let's try that next" and more like telling me that is the normal and I can expect such repairs regularly, it's part of the deal... not sure if I should buy that.)