So I have been playing 10 almost 11 years and now im forced to download the game again 18gig's of usage which is gonna cost me about $45 bucks where do i send the bill or will you give us all DBC?
Switch regions. It should validate all assets, and probably download a bit of region specific files. Wait for it to complete, then switch regions back to your original. I switched to EU-English, and it downloaded about 18K of data. Then I switched back to US, and it again downloaded/updated about 18K. Then I was able to play.
Select a different game version like EU English and let it roll for a minute then close the launcher. Re-open launcher and re-select US English.
Ignore the trolls. Listening to them is bad for your health. Preloading assets is not re-downloading. It's preparing some common game resources before you launch the client. If you're downloading, it will say so.
EQ2 has had this problem for years. Sometimes, for no good reason, the game deletes and redownloads the paks folder. It's happen to me 3 times in 10 years. Now I keep a backup of the paks folder in case it tries it again.