1. Monero is a shitcoin. You have no right to tell me what a valid reason is or not.
  2. Monero has infinite inflation.
  3. Monero doesn't work, it has major privacy flaws that researchers have sounded the alarm on for over 6 years now.
  4. Monero has an agressive, willfully ignorant and childish community.
  5. There's no way to validate the supply in Monero.
  6. The Monero community pretends to be otherwise, but they're very sensitive and defensive about any criticisms, which ensures that nothing ever changes.