Removing all your bots ?

Agreed, please don't drop everything. Clearly you're smart and a good programmer, and even if you aren't cracking top 10 (out of over 1000!) please don't be demotivated. I bet there are a few bugs that are lurking somewhere in your code that if you found them would instantly give you a 20 position boost. Just ask User:Chase-san about his experience with Seraphim.

I also started Robocode in high school, and it really shaped my whole understanding of geometry, statistics and more and has eventually impacted where I work and a lot of my understanding about software design, when calculations should be approximated and when a high accuracy version is required, etc. Robocode is definitely the best studying tool I have ever come across.

For me, at least early on I got the most satisfaction from the microrumble - having the codesize limitation meant that there were less moving parts and it was small enough to keep the whole thing in my head while I internalised all of the physics, strategies etc. I still think there are major gains to be made in minirumble, and the nano/micro/mini melee rumbles are also very neglected. Maybe you would find more enjoyment in the codesize limited divisions? The megabot scene isn't for everybody.