I would go out of respect for my uncle (even if he didn't want the service) and to keep the family from gossiping about you for not going (sounds like you are in a no-win situation here). If they are that bad, don't speak unless you are spoken to and leave when the first opportunity arises.
Be glad you aren't a member of my family lol...they would fist fight over his belongings at the service and then accuse each other of stealing whatever they didn't get.
Best of luck to you. [img]smile.gif[/img]