I have a Roadmaster "Mountain Fury".

Yes it is heavy, somewhat uncomfortable, shocks don't do much, etc. But there is a place for it.

I want a bike that I can tinker around with. I don't want to feel too bad about putting the bike on a ferry with gazillion others. And if I had to park the bike someplace, I would be putting only $59.73 at risk. And, a spare bike is always nice to have for anyone that visits and wants a tour of the neighborhood.

The assembly seemed OK. The drivetrain is not a hundred percent smooth, but the rear gears do shift without skipping or derailing the chain entirely. The front derailer is more interesting. It gives the appearance of being indexed, but is not. You shift gears by moving the grip shifter until the chain goes to the next gear, and you keep trimming your adjustment until the noise goes away. So far I have not noticed any safety issues with it.

My "real" bike is a better regarded Raleigh hybrid. However I would be loathe to treat it the way I treat the Roadmaster. There's way too much money invested in it.