Going green: Dr. Bronner's vs. baking soda / vinegar

I have two questions about soaps and cleaning, in general!

So I've switched to baking soda and vinegar for cleaning and for shampoo/conditioner, but I recently read an article that said these are mostly disinfectants--it is sometimes better to use soap and some elbow grease to *clean* things rather than *disinfect* them.

I've always been apprehensive of using soap because it is not biodegradable (or else really expensive if it is), but being able to use soap products will allow me to have biodegradable toothpaste (apparently) among other things--straight baking soda is too abrasive to use regularly for most hygiene care. Dr. Bronners is biodegradable along with a whole string of other environmentally/people friendly things.

1) Both methods can be used for a variety of things though--so which is better for what?
Shampoo & conditioner
toothpaste
body soap
laundry detergent/soap
dishes
household cleaning

2) I mix vinegar with dish soap to clean the shower--the soap makes the vinegar stick to the wall so it doesn't just run down the sides before it starts to work. But I guess the sudsiness is always due to crazy chemicals that are put in to make it seem likes stuff works--usually all these other soaps are not sudsy (very true with baking soda/ vinegar system). Does anyone know if there is a way to get a sudsy/sticky yet biodegradable mix with vinegar to clean the shower?

Thanks!!