I feel the same way. To be honest I'm on my third kindle, their life-span seems to be about five years for me.

I don't love having to replace them, but paying €120 every five years is probably worth it. I mean that's €2/month, and I have a huge library of books which I load via calibre.

I read daily, on the bus to work, at home in bed, and while there are "more free" ereaders I've become accustomed to the kindle and have no complaints. If I were not so clumsy they'd last longer, so that's on me.

My physical library is pretty big, but being able to carry 50+ books at all times? And have a battery life of a few weeks? (I stay in airplane mode, as I transfer books via the USB cable). It's hard to complain.

Same boat as you, I'm on my second kindle in 10 years. Absolutely love the device and the convenience of reading on it. Also have a large physical library that I still add to occasionally (esp in relation to the space I have in Condo buildings), but reading on my kindle is my go-to choice.