It's very common these days for fans of certain pop culture franchises to pull out the "my childhood is ruined" argument when faced with a reboot, relaunch, re-imagining or anything they don't like anymore. It was said back when the Star Wars Prequels were revealed, Transformers, Marvel, DC and now Ghostbusters.
The fact of the matter is that your childhood is NOT ruined. They are not removing anything from your enjoyment of the entries previously. The new Ghostbusters made by Paul Feig won't stop the enjoyment from the 1984 and 1989 movies, nor will it stop people from enjoying the video games or even stop people from watching The Real Ghostbusters.
If you don't want to watch the new Ghostbusters movie, that's fine, but please don't ruin the enjoyment of the movie for other people that are genuinely wanting to see and enjoy it. I wasn't sold on the trailer, but I feel that it could do well when I see the movie properly at the box office and for many people, this will be THEIR Ghostbusters, much like the fans who were able to see both movies at the box office for the first time, we shouldn't be taking that away from people.