I disagree, I'm a big research buff, I do it in my spare time nearly everyday and wikipedia can be a great aid in finding key words and information to help you choose better searches for any subject.
For instance, if you're looking up mythology, it can give you source and text names as well as alternative spellings and names. If you're looking up a scientific theory or term, it can give the names of scientists that studied it.
Certainly it isn't the best resource to base your knowledge off of, and you should never stop at wikipedia, but it's worth the click to skim through and decide what to search on google from there.
It should be noted that there is inaccurate information on wikipedia, but that's what the other searches are for.