Sorry to hear your horror stories about Tauruses. It sounds like all your Tauruses were autos.
I've had one Taurus revolver.
The amount of shooting I do is probably too little to put any kind of strain on my revolver. But then again one of your new Taurus autos broke ever before you started using it.
To go on a tangent, I just broke my Single Action Army replica . The cylinder lock broke. Specifically, the retention spring (?) that pushes the cylinder lock (or catch...whatever) broke. The good news is I can fix it myself by ordering a $6 part