How long a hot water heating boiler should last?

I have Burnham ES2 for 17 years. it threw fist error code (which is gone after restart). But tried to call my plumber and he suggested that the boiler is on the way out and may completly fail in the middle of the winter. Quick search also shows that this boiler can last 20-30 years. Is this the current consensus?

There are couple of experiances pointing that this is not right:
– my old boiler was working for literally 100 years. It was build when there was no electricity in the house.
– if water heaters lasts 10 years and water boilers last 30 years, I should see disposed boilers and heaters. but I saw many disposed heaters and maybe one boiler. And there was a significant sample size to make this observation statistically viable.