You were lucky enough to get a cheap peugeot with cotterless cranks, run with it.
95% of the loose bearing BBs I open just need some cleaning and greasing. I had a stronglight bottom bracket on a 73 PR-10 that felt toast, it took, I kid you not, 10lbs of pedal force just to turn the cranks. The original grease turned to glue somehow but after two hours with rags and isopropyl it was clean as new, add some phil green and its just like new.

For some reason I take great joy in stripping a frame and overhauling the BB, HS, open race hubs, pedals... its very rewarding, almost like a whole new bike. Plus the new bearings are dirt cheap compared to cartridge or sealed bearings.