Do uploaded files expire?

i couldnt seem to find any references to this particular question in the forum already. im new here so im sorry if this issue has already been addressed.
ive been to many many hosting sites to share my recordings with my friends and these sites, usually without obvious warnings, delete the files after given periods of time or if they are not downloaded enough ect. i cant find any indication of such behaviour on this site, which is an incredibly good sign. but then i couldnt find anything mentioning those details on the other horrid sites ive been exposed to prior to finding this beautiful and ingenious creation.

do you have a limit to how long you host uploaded files? or is it a 'forever' unless otherwise thwarted (aka deleted by user or some such thing)?

i really appreciate you guys putting in the time and effort to offer this service, it is something i have been praying for on the internet for years (if only i had the programming and technical abilities) i am so glad i found this lovely place. great work and thanks a million!!