yeah genetics is the main thing...but you take the genetics you have and just make them the best that you can be....I mean, I will never be a pro bodybuilder, or maybe even a top 5 national level BB..but, that wont stop me from trying....Hell im getting closer to 40yrs old, so in the next couple years, I will put my foot on the master national stage and see how that is...Maybe, I can do something on that stage, hell maybe even this year at Jr.Nats...who knows....genetics might limit your roundness, your size, but it doesnt limit your heart or desire...so continue to push on and prove your genetics wrong...