Yea, I used to be like that. "Red Dwarf just makes a mockery out of SciFi, how could any SciFi fan support such rubbish" or I stayed away from Eureka and Warehouse 13 because they had so much comedy, and mostly avoided SG-1 because of all the one liners."New Earth" is a comedy episode, and I thought it was funny and enjoyable. Some people simply didn't like it, others take their science-fiction very seriously and feel that comedy destroys the verisimilitude of their favorite fictional world.
Comedy SciFi is not a crime against SciFi, and often adds quite a lot. It's especially important in a very grim Series like NuBSG, if you don't toss in comedy here and there, a show like NuBSG makes you want to slit your wrists out of Depression. Now, I'm still not the biggest fan of Red Dwarf like many are, but, I have certainly enjoyed watching it all the way through, I thoroughly enjoyed SG-1 and WH13, and Eureka was astonishing to me just how fun a Series it actually is (Thank Goodness for DVDs, as I got to watch it all in one go and loved it)