Welcome to the boards!
Check out the thread under "Open Topic" titled "Cadence... what should we be doing?" It should be one of the most recent ones.... judging from that thread, you're not alone! Lots of people are mashers rather than spinners, myself included. I try to force myself to spin, because i have bad knees and I know mashing is hard on the knees, but it's not really that comfortable. I think it just takes some getting used- to.
Good luck!