As some probably could have predicted, I have sold my '15 2 Series for a 2018 Camaro 2SS 1LE. I liked the M235i and it never gave me a single problem in 3 years and 10,300 miles. The luxury and quality were better than any car I had ever owned, by a lot. I'll probably miss the size most - it was just a perfect-sized car, nimble and super easy to drive.
But, soon after I bought it I realized it just wasn't the car for me. It wasn't racy enough, or aggressive enough. If it was an M2 it might have been a different story, but I'm not even sure about that.
I've only had the Camaro for a week and 106 miles, but I already know it's the right car for me. It's a bad ass monster. Plus, it's surprisingly high tech. It's got a crystal clear color HUD, which I can't take my eyes off.
The MyLink touchscreen system is more intuitive than the iDrive system (IMO), and certainly more flashy. Android Auto works perfectly, as does the iPod integration, etc. Plus Blind Spot monitoring, Cross Traffic alert, parking sensors, rear camera, Bose stereo, wireless mobile charger, eLSD, heated/cooled Recaros, heated steering wheel, etc., all standard.
But you don't buy an SS 1LE for the tech - you buy it for its brute force. 305/30R20 Goodyear Eagle F1 Supercar rear tires on 11" wheels. 6.2 liter V8. Brembo 6-piston brakes. Magnetic dampers. Tour, Sport, Track, and 4 different Race modes. And the warranty explicitly covers track use!
I wish I could have kept the M235i for the sporty luxury car, but my budget and garage only allows one weekend car.
And finally, I have learned a lot on the 2 Addict forums, enjoyed the discussions, and don't plan on going anywhere despite being an ex-2 Series owner.