Is it worth using UNet?

I am currently developing a multiplayer game, but since UNet is getting deprecated soon enough, is it still worth using it.

 

Sure, if you don't care that is going to be depreciated and support probably dropped.
People already consider migration, or migrated to other frameworks.

 

What other frameworks are there to be used?

 

I would recommend Photon PUN2. But framework does not really matter, just pick a popular one. In the end, you gonna see all other frameworks share the same ideas - Local or Remote, Master client(host) or other clients, RPC or local function call.

 

Mirror is a community developed alternative that was built off of a forked copy of UNET. If you want to use UNET this is the best way to do it since it has fixes and improvements the original lacked. It's released under the MIT license.

https://forum.unity.com/threads/mirror-networking-for-unity-unet-replacement.425437/
https://github.com/vis2k/Mirror

 

I would use Mirror myself
but you can also take a look here

just watching it now myself ^^