You should absolutely go to launches if you haven't done any/many. They are quite fascinating - and who doesn't enjoy a junket / working holiday - especially if it's on company time.
But as a Freelancer, after a while I got a bit over it all however. Realistically it's 3 or 4 or more days out of your life for a very small earn. Now I'm like: "Just send me the product or lend me the bike."
Not so much jaded and cynical - more 'show me the money' these days. But the first few are like Hollywood and Christmas and a buzz.