Rarely have a I played such an expansive game that promised so much and was totally empty, devoid of anything interesting. I got sick of it within a couple days of getting it. No plot; no real characters (at least none who you can really interact with); no story that got me hooked. While the gameplay was pretty good, that's like saying you have a magnificent car with excellent off-roading capabilities, but you live in the middle of the Sahara desert. It was just a wide open world with nowhere interesting to go, no one to talk to (except that Goddamn rolling mini-fridge). Oh, and there was a grandiose bunch of interchangeable weapons. Wow, no two weapons are alike. Big whoop.
Why should I care about killing the same respawning wasteland raiders, exoskeleton-clad hyenas, sky moths, or purple lobsters when I am not invested in the story? My character is totally interchangeable and I felt that I contributed nothing to the world in any way, positively or negatively.
So in answer to the OP, no, I haven't played Borderlands in a long time, nor do I wish to ever play it again. There are myriad high-quality shooters and RPGs out there, and I need not waste my time on a second-rate game like this.