Today 10 years ago I went to Poland to buy a Phone with pre installed #Firefox OS on. The Phone was a Alcatel One, so very shitty. Two years later I installed Firefox OS on my Nexus 5 instead.
It was a very good concept, but sadly rolled out on too shitty hardware so it never caught on.
I still have mine in a drawer. Sure newer phones are taller but that thing was fucken WIDE. It felt more like a small tablet. I don't know if it's right to say that Google made it though; really it was made by Motorola
Same here; I've got mine in a box along with my Pixel XL, Nexus 5, and Moto X (which feels like a tiny Nexus 6). I tried the Nexus 6 for a few hours about a year ago, and it was still surprisingly snappy. I have a Note 20 Ultra for my daily driver, and it still feels small compared to the girth of the Nexus 6. I feel like I could possibly use it today, which is one of the reasons I keep it around, in case of an emergency.
My Nexus 6 was the worst phone I've ever had. It aged like milk. It was so bad I jumped off Google phones and never went back. Getting the OnePlus 3T was like breathing fresh air again.
Edit: had the Nexus S and Nexus 4 before the 6, loved those phones... So jumping off Nexus was no small matter.
I've had android phones since the G1. The Nexus One was pretty freaking sweet, but my favorite phone of all time was either the Nexus S or the Nexus 5x. The curved screen on the S was great and it fit into the back pocket of my pants "like a glove".