Good luck determining why you're lacking motivation.

Can't say what others are feeling or if this is a common issue among cyclist or anybody who participates in some form of exercise. Speaking for myself, there are days I should ride but just don't feel like going. Other days I start riding and feel like turning around within a couple blocks of the house. With me, deep down I know cycling involves work, it's going to involve suffering, pain, increased heart rate, heavy breathing, it just plain hurts at times. I have to convince myself all this is a good thing helping to stay healthy. But really, I just don't feel like doing the work some days. I'd rather take it easy and relax.

This is where it helps to create a goal, no matter how small. Even if that means your just checking out what's new in the neighborhood. A trip to the hardware store. Commuting to work, groceries, or a doctors appointment. I also find a trip to the LBS to see what's new and hanging around other cyclist is motivating enough. Then of course buy something, even a pair of socks to find another reason to ride.

My biggest motivator so far is my wife. Not that she encourages me to ride, because often she would rather have me stay home to work around the house. She works in the Hospital taking care of patients, she comes home telling me about complications with diabetes, obesity, strokes, alcoholism, drug addiction, lack of mobility, and regular exercise.

So I ride to get and stay healthier. I also realize I don't always have to push it, that it's OK to just spin around and enjoy the sights. On some leisure rides, I start slowly spinning then after a few miles start feeling so good that I want to ride faster and it's fun again.

I'd recommend you find other reasons to ride that make the bike fun. After all, riding a bike should be fun.

best of luck....