Randalator: So you had an e-mail address but you didn't check your inbox for what? Years?
Frankly, I do have a couple of semi-temporary hotmail.com-accounts I hadn't accessed for years, yet I had used them to register to some online forums and online stores. I think both accounts were in a frozen state but I was able to reactivate them.
However, now I will not easily miss anything in those accounts as I added them to Thunderbird along with my more actively used email accounts, so I will see if anything comes to those accounts whenever i run Thunderbird.
I hardly ever read any emails in my gmail account either, the one that I have on my Android phone. I think the only emails I get in there are security notices from Google.
"Why would anyone need several email accounts?" Well, in my case I decided to create one or two "trash accounts" that I can use to register to some sites or forums that I wasn't sure how they will use my email account, e.g. like sending lots of spam into it.
Also, naturally I have my work email account, then I have a "professional private email" which I use in LinkedIn and such services, and then I have a more generic private email which I most widely share with my friends, relatives, people who say they need my email address etc.