Issues like skunking and breakage are really non-issues. It's all about the beer. Plastic is plastic is plastic. It scratches easier than glass and absorbs odors. If you get aggressive on cleaning you will scratch it which will effectively render it useless. Glass, at least for the homebrewer, cannot be beat as far as the beer is concerned.
Can glass break? Of course. But there is this thing you can do called "being careful". It means that if you have to carry a full carboy a long way, you either need to move your brewery closer to the fermentation spot, or you need to devise a better way to carry it so you won't drop it. There are lots of carriers and straps and other doohickeys to help you do this. And skunking? Give me a break. Wrap a towel around it, or make a cover. I used to use a T-shirt with the air lock sticking out of the neck hole. Better yet, turn off the light, or find a dark closet somewhere. This is really a non issue.
I broke a carboy once. It was ugly. I was also being stupid. Learn from the mistakes of others and you won't break your carboy. Be careful, use glass, and your beer will thank you.
Prosit!