Spring summer and fall my from lite gets used 3+ days a week. It's 3 years old and is starting to show a little wear from being thrown in my pack recklessly along with other gear.
I don't think a guy would ever wear one out if all it did was sit in a bladder sleeve.
I also have one of the black heavier versions. And it's thick and heavier.
They both work great. For my style of backpacking I'd buy the red one again. If I were to be getting another everyday beater it would be the black version. Both tough bladders and IMO the best iv tried.
For the record iv had camelbak, platy and source bladders fail on me, sometimes from user air but most of the time I also gave my little dorm lite bag the same abuse and it's still kicking.
They are the only bladders that I have ever been able to keep outside the pack on the prairie as well without developing small leaks. I don't know what it is but water bladders outside the pack and the prairie do not go well together.