1. " How fast does it go?" followed by "How much does it cost?"
2. People who take racing too seriously. C'mon it's just a hobby, all u can win is just $10 cup what will just take space on a shelf and collect dust.
3. Paying 19% VAT for orders over $200 from outside EU. Added Value? Where? For what?
4. Gluing tires (except VTR truggy)
5. Having to wake up at 4am to be at the race 7am after 200+km drive
6. Not being able to drink for too long after getting up at 4am and racing whole day
7. Cleaning up my home workplace as after trying to find a part I really need for 4 hours.
8. RC parts packaging. Who needs every single screw in separate plastic bag. Just put a pile of parts in a box - it's a racing kit and I know how to put it together

9. RX Lipo quaility. They are either junk or too big.
10. Bearings. Just make a bearing that can survive whole racing season and does not melt my diff box after 25minutes of A-Main.
and a bonus one - Tiny set screws in the driveline - If you loctite them, you will never get them out. If you dont, they will fall out in the middle of a race.