There is nothing like waiting for 3-4 weeks and then tasting right out of the fermenter... you realize, ok, I'm going to bottle/keg this stuff and carbonate it but.. it tastes good enough now for at least a good cupful.
If you wait you will be sparing yourself headaches, literally... The fusal alcohols in the young beer can give ya a nasty headache.
All that said, us guys telling you to wait have beer in our pipeline to drink! I can really understand the desire to drink that first beer from the first batch. Be strong!