There are no boring problems, only "boring" problems. Problems that are met with an "Oh, OK" at a dinner party, before the conversation quickly turns to other things. Problems that most people don't understand, and don't try to. Problems that improve the world when they're solved.
For every "interesting" problem that is solved when a dating app is released, there are nine "boring" problems that don't get a second look.
The majority of designers around the world spend their days tackling these, and they know that the problems aren't boring at all. They're difficult, frustrating, and wonderful. They're the cogs that cause the age of information to turn.
We solve these "boring" problems so that it's faster to make a hospital appointment, easier to diagnose a problem on a wind farm, and simpler to organise experimental research findings.
To a designer the problem is interesting no matter the domain. That's why we can't help ourselves. Why we don't all need to work on consumer mobile apps, but are just as happy to make sure that it's a little easier to log into a corporate intranet. Why we could talk about those problems for hours, even at that dinner party.
If you're careful, design improves people's lives. How could that ever be boring?