Being the weak one sucks, just ask Usopp - beaten within an inch of his life and robbed of a new found fortune; the money was for everyone; for his nakama. They relied on him to carry it and he lost it. They wouldn't lose it, but he did, because he is Usopp - the weak one. The material money is actually irrelevant; it’s just that the thieves stole his pride too. Hanging around with Luffy, Zoro, Sanji and Chopper, this was bound to happen. He can’t keep crawling back to them for help, and so he goes alone to “Franky’s Houseâ€