I used to be pretty judgy about it, but I'm not anymore.
After I split with my ex I moved back in with my parents so I could save enough for a deposit for a house. This is where I am currently. I do have an end in sight, though.
So, to answer your original question, it's not pathetic, no.
I would only think it was pathetic if the person was not ill (physically or mentally) and didn't contribute as an adult (financially or just physically with cleaning/cooking) to the household. There should be a good reason someone, as an adult, doesn't contribute.
Reading further on in the thread, it does seem you're quite unhappy about your decision to stay though - can you set yourself achievable goals that might help you move out in the longer term?
I know you might have tried various things already, but could you look at what you eventually want, and take very small steps towards that rather than looking at it as big steps i.e. clear 25% of debt by X date, then 50% debt by X date etc.