I downloaded (on dialup!!!) the beta of 7 the day of it's release, and 7 has been on at least one machine ever since.
In early 2009 I bought a brand-new laptop with Vista Home Premium 32-bit installed. While I was quite familiar with Vista, having beta-tested it, this was my first 'retail' version (I'd been on XP till then, mainly because of MS' pricing here in Oz). But it only lasted approximately 24 hours before being replaced with the 7 RTM. That machine now runs Win 7 Ultimate SP1 32-bit. Flawlessly. Without issue. And it always has.
This laptop came in February last year, with Win 7 Home Premium 64-bit installed. It stayed until last August when the Win 8 RTM went on. This machine now runs Win 8 Pro w/Media Center (W8 Ultimate, basically), and I love it now that I've customised it to suit me, and not a tab/phone user (I did not like the OOBE very much). But the W7 install is backed up as a sys-image, and is regularly restored and updated.
There are things I like and dislike about both OSes, but I can live with/get around almost all of them, which is why I don't take sides in the Win 7 vs Win 8 Great Debate. Nor do I tend to actively engage in Win 8-bashing on EightForums, just as I do not bad-mouth Win 7 or Win 8 here.
So yes, been using 7 since the beta's release, and still using today.