Your main concern I believe is to move your relatives/friends there. And for work, communication with strangers you can use your usual messengers. This way you don't lose opportunities in your career, but you protect the most sensitive information. You can tell your relatives/friends that you will not talk to them on the phone in other messengers. It is also an effective tactic.

I think it is difficult for others to tell you whether it is "worth it", because that is very personal.

For me, personally, transferring my family and friends to Signal is not worth it because Signal requires a phone number. If I will invest such an effort, I would rather help them migrate to a service that does not require a phone number - such as Matrix or an XMPP server. But needing a phone number to register might not be a problem for you - in which case Signal could be a perfectly reasonable choice.

But... Even then - is it worth it? Again, it is up to you. I tried, but my success has been limited. The reality is that I still have a phone with WhatsApp that I leave at home and I check it every day or two. I tell people that if they want to reach me, the best is to use e-mail. And to my closest friends and some of my family I did convince them to use my XMPP chat so that we can be connected more often. No one really left WhatsApp, but at least we can have some fun conversations on our own server, which is nice.

But I am not going to lie, I am sacrificing a ton of functionality and convenience. For me, this is worth it because I think that it is GOOD not to be available through the phone all the time, and I am idealist when it comes to not giving big companies our data. But for some people these sacrifices might be unsustainable, and it might not be worth it.

So: I don't know. Maybe it's worth it?