https://screenrant.com/big-bang-theory-ending-raj-anu-wedding/

Raj and Anu's relationship may be unconventional, but they are perfect for each other. The Big Bang Theory should end with the pair getting married.

That would be sweet.

I think that would be the best way for the show to go out after a 12 year run. It would also show that Raj finally found love after struggling for the entire run.