So lets say after 10 years no one uses wallets which support BIP38 encryption will I be able to get my coins back?
Is there are universal way to decrypt BIP38 if you do KNow your pass?
Yes, just keep yourself a copy of BIP38 tool,
such as the one TryNinja mentioned, on your usb/cloudstorage/hdd
or the hard way, you can read and understand what HCP posted
the technical way
finding BIP38 tool (or decrypting it) in the future is the least of your problem,
your main problem is if you forgot your passphrase, recovering your bitcoin by bruteforcing BIP38 would be very hard