I was in the same boat as you 3 years ago. Switched to english...did flatwork for about 3 months and then went on to jumping...never looked back. I love english...saddle is more comfy...stopped having lower back pain...love the adrenaline rush of jumping combined with the precision of riding without all that bulk underneath me...love "feeling" my horse more. I'll never go back to western personally.
I was coming from the AQHA world...where it seemed like everybody was a snob and horses "retired" at age 6...bleh...never again.