I understand your frustration completely. However, here is a little story of a friend of a friend... RN - ADN, decades of experience in her field. Works in a hospital unit. She refuses to get a BSN, cannot transfer into another unit. BAM! Needs hip replacement surgery. Surgery goes good, everything is okay, but she's in pain constantly. Orthos say nothing wrong, it's healed nicely. She attempts to get qualified as disabled. You and I know that won't fly. So, she feels she's not able to go back to work, but has to. But, they have to qualify her/make sure she can do the work still. If she had her BSN, with her experience, she'd have a lot more options. Right now, she faces being unemployed or working in chronic pain. So, you never know what is down the road.
I do the Univ. of TX at Arlington RN-BSN. The RN course are 5 week sessions. So, 5 weeks and you're done. They go fast. Any pre-reqs are 8 - 10 weeks. If I really could put my brain to the grain, I could have knocked it out and been done in just over a year. I take four courses per semester, which is not that bad. You can go as fast or slow as you wish. It's cheap too. Some of the people in the courses are in situations like yourself and they have said that some of the courses have re-energized their feelings for their career. Good luck in whatever you decide. I totally get the lack of enthusiasm.