So if you're RETURNING to D&D from another game or from no gaming at all, let us know! What were you doing before? What brought you back?
I've never been a die-hard "D&D or nothing" - hell, through most of 2E, and all of 3E and 4E, I've been a "I prefer other things to D&D most of the time"... My last 2 D&D campaigns were both run using Cyclopedia.
I got into 5E because (1) I'm a decent GM at almost any game I'll run, which leads to... (2) my FLGS needed someone to run their 4th table for encounters, and (3) 5E doesn't suck.
My home campaign is FFG Star Wars (F&D). My prior campaigns were (in reverse order) The One Ring, FFG Star Wars (AOR), Firefly, FFG Star Wars (EOTE x2), Prime Directive 1E, KAP 5, T&T 5.5, .. (I think that's going back 3 years, and some of these overlap - I've had 2 campaigns going at a time for large chunks of my gaming life.).
My "dabble with stuff from the rules" game was and still is MegaTraveller.
I occasionally break out the T&T or TFT solo modules and play them.
Mind you, I've run campaigns of most of the D&D editions over the last 34 years... Moldvay, Mentzer, Cyclopedia, AD&D1E, AD&D 2E, 3.0, OE (but mind you, I've a misprinted book, so it was severely variant - since that printing lacks the "All hits do 1d6 damage", I had a hit doing 1 hp...)...
3.5 didn't do anything for me; I didn't like 3E enough to go back to it after my second 3.0 game, so when 3.5 was almost the same, but getting rid of the few things I thought 3.0 did well... I tried playing some 3.5 with a buddy, but his game was too tactical minis...
And 4E was just too cumbersome. Even using the preview rules only, it was cumbersome. And too much to write to not use a character generator. So, since 4E, I've been just uninterested in the D&D offerings.
I got into the beta pool just to see where it was going. I wasn't convinced.
And then, the Basic Rules hit. And the "Would you be willing?" from the store. And so I tried, and I liked it.