I am currently riding a Trek Mt. Bike as a bicycle for my 25 mile round trip commute. I decided to give my kids the cars for college and ride my bike to work and home. I ride on a paved bike trail with moderate incline. The bike I am riding is one of my kids when they were between child and adult. It is a bit too small for me but I manage fine. I live in Michigan and have been told I should have a road bike for what I am doing. I am into my 3rd month and love it and take a detour to ride around the local metro park...a 12 mile extra ride on paved bike path with moderate incline. I don't know what difference a road bike would make for my ride and will be riding in some snow I'm sure as the weather changes. Thanks for any advice you can give.