Using Mountain bike as road bike - Guidance
I have a Cannondale F2 MTB from 2020. I had ridden it for two years, mainly on paved trails. Got off the bike with (kids, wife, life). Now getting back into riding. I shoot for 80-100 miles a week. I can Avg about 14MPH, but it takes a lot of effort (more than I remember). Before, I would meander off the paved trail and onto more rugged terrain. Now, I rarely (if ever) leave the pavement.
Is there any advantage in switching to slick tires, or at least thinner hybrid tires? Should I look into a new bike? it is my main form of exercise as I can't run without getting excruciating back and hip pain.