What exactly makes it so bad? I’m assuming you went into it thinking it was worth the trade for whatever you received, but changed your mind after - what can you tell us to keep us from making the same decision?
Would you want to spend 2-3 hours of a 3-day vacation negotiating a new car price? If no, then maybe you also don't want to spend 3 hours saying, "No, thank you" to a very nice timeshare salesperson and you should spend it at the beach, in front of slot machines, or getting drunk instead.
Not all of your time is the same.