Pros and cons of cycling to work and back 5 days a week?

Was just wondering from a fitness and weight loss perspective. I've been riding to work and back off and on for the past few weeks and enjoying it. But doing Mon-Fri (it's about 14 miles in total, there and back) would probably increase general CV fitness over time and quite probably accelerate weight loss (simply burning more calories) but building muscle would suffer as my legs wouldn't have a day in between to rest and repair (I've always been told that from a gym perspective you need a day between workouts for the body to repair/build). Does this sound about right?

Wondered what the advantages and disadvantages are to cycling every day (well 5 days in a week to be specific) as oppose to every other day, if any?

Ta muchly.

Just ride your bike, innit.

Unless you're in training for something specific I wouldn't worry about anything else