Well... if you want to install anything *new* down the road, it can be a bit challenging. Also, if you want old libraries for said new-to-you programs you may suddenly find them unavailable.
I speak from experience. I switched to debian, and never looked back. I suppose it might be different now...
Anyway the very last version, on the net from Yesterday is one of the "long term" and will be supported for 3 years
Yes. I tend to re-purpose machines and use them until they die. As I said, Lazy. So YMMV.
And there are reasons not to use Debian. They get weird and political about seemingly arbitrary things (I know they are not, by the way, but if you don't have an exhaustive in depth knowledge about the Free vs. Open software... it really looks random) And so you have to do some of your own leg-work for things like... Flash Player and the like.
And yes, one should always download from the package manager, because dealing with dependencies in your head is more than anyone should have to deal with.
As for on-line searches: was talking about browsing for how-to's and other on-line information. I should have made that more clear. Sorry.
I don't hate Ubuntu. I rather like it actually. I just use Debian because it meets my personal needs somewhat better. For most people, Ubuntu is probably better. So let's just pretend I edited that comment out. It's pretty pointless and just adds drift.