Or, on the other hand.... If you have learned competent aerobatics in a 152 Aerobat, you have probably also learned some flying finesse, rather than just powering through maneuvers. The 152 Aerobat is a compromise airplane for sure, but the things on the other side of the compromise (like economy, and ease of flight) make them pretty attractive overall.
In flying as in life, you can always find something bigger and more costly to operate as you progress, start cheap and simple first!