Commodity hardware & open source software for the win.
When my Western Digital NAS was never going to get critical security patches, I was so freaking glad to find out that they just used software raid... I threw the HDDs in a Debian server and never looked back.
It's certainly nice to have things that are turn-key, but if you can find your way around any OS, just avoid proprietary everything.
How many years?
The amount of utility I accidentally extract from my phone over the course of a day on one charge is pretty incredible.