“While it's true that at least 99% of revolutionary announcements from the fringes of science are just as bogus as they seem, we cannot dismiss every one of them without investigation. If we do, then we'll certainly take our place among the ranks of scoffers who accidentally helped delay numbers of major scientific discoveries throughout history. Beware, for many discoveries such as powered flight and drifting continents today only appear sane and acceptable because we have such powerful hindsight. These same advancements were seen as obviously a bunch of disgusting lunatic garbage during the years they were first discovered”
That is a quote from this website
http://amasci.com/weird/vindac.html
It goes on to list 52 people who were ridiculed for their forward thinking.
I do agree that some of the things that people generally call conspiracy theories are pure bunk but not always and many so called conspiracy theories from our past have later been proven to be fact. Do a search on that if you care to, you might find it enlightening and hopefully a bit humbling.