I draw/ink my comics (creep and snips) traditionally and then clean up and color digitally. I think digital color is kind of the industry standard at this point, but that doesn't make it a necessity by any means. You can still do a successful comic traditionally and/or in black and white.
Here are a few great comics that are colored traditionally, granted it's a very short list that I can think of off the top of my head:
As the Crow Flies by Melanie Gillman - colored pencils
Sweet Talk by J Mork ( @bumblegoo) - started off digital and then switched over to water color
And here are some black and white ones that I follow:
Mary Death by Matt Tarpley
Sarah Scribbles by Sarah Andersen
No No Life by Lottie Pencheon - you can see some other comics on her tumblr that are also traditional
I think the main goal should be presenting your ideas in a clear and readable way. If you feel most confident drawing traditionally, then you should practice on honing those skills and techniques in order to make the best comics you can.