Lucky people who felt the joy of running immediately. I tried to start running many times. I got myself to 5k. But I hate it, it is boring, and just about any other physical activity feels better than running for me.
The greatest outdoor activity I ever had was skateboarding (I am 33, and started two years ago) — I really really loved it, could do it for hours, learning tricks and just moving through the city — right until I broke my ankle. :(
It might not work for you, but for me, the joy in running comes from using that time to let my mind wander. Sometimes I use it to think about work and sometimes I just daydream. It can be a great meditative conduit.