It sound to me like you need to take up synth, or electric guitar. I've done things the other way round. I was a pro guitarist playing many different styles, from Van Halen to the Shadows and everything in between. I know find the piano more pure, more challenging and more intellectually stimulating.
Learning to sweep pick and two hand tap on a guitar with huge verb and delay, compression to sustain notes and etreme overdrive (as a heavy rock / metal example) actually requires very little disciplined skill. The effects hide a thousand sins. It's much harder to play a tough, fast classical piano piece with accuracy and good technique.
I think it was a little harsh whoever suggested he should 'leave now'. Instead, perhaps listen to some of the ground-breaking composers and pianists, relevant to their day. There is plenty to satisfy your need for the 'extreme' in classical musical if you dig around a bit.
BTW, in his day Liszt was considered as radical and virtuosic as Hendrix was in the 60's. He even had hoardes of women swooning at his feet, just like a modern day rock star. Paganini was no slouch either in terms of showmanship and virtuosity....maybe the violin is the instrument for you. With an electric one, you can add effects as you please.
