Okay, so I need some advice.
I've been talking with various friends who ride and they're claiming that an entry level road bike would be a better way to get in more miles per week, and thus increase my cardio level faster. The argument is that with MTB, there are many times you'll go from putting out everything you can power wise to crest a climb, only to coast down the other side, then repeat. Wheres for the most part, in road biking, you're spinning a lot more. So does that sound like truth, or BS? I realize a lot of pro atheletes, moto guys included, all road bike for cardio, and not MTB.
The biggest thing for me would be hammering out more miles, we have a 6 mile greenway here that would be a perfect way to get started in road biking without being freaked out about interacting with traffic on our curvy mtn roads (my biggest fear on a bicycle). I realized I could swap tires around on the MTB as needed, but having done that on motorcycles in the past, it's a PITA to me to be honest and I'd rather just have another bike ready to go if I'm going to put in miles on the pavement. Also, with how the wrist feels today, I doubt there's any MTB'ing happening in the next couple weeks, but I think I could pound out some miles on a smooth surface just fine.
I've been considering buying a new fork for the MTB, but now I'm considering putting that off till next season, and looking at a road bike instead. Thoughts and opinions are needed and encouraged. Also, I've been told the fitness from the road bike would help my MTB'ing considerably as well.