Could be just laziness maybe. Mixed with possible relationshop pressures (hinted by earlier submissions I noticed).

"My managers don't fire me". Perhaps show managers the post written here? I dare you! But they pay your wage.

Put headphones on and listen to the right music or something to encourage focus. Yep!

I think everyone is in the same boat as you in some way or another. "wasting considerable amounts of time" could be a worry though.

"Seriously affects the quality of my life"... surely the quality of your life is not a consequence of "unnecessary complexity in the codebase"? Good luck anyway :)

Edited - I'd had some wines