Is it weird that I'm starting to feel like having a phone number is not worth it?
First, I use actual phone conversations VERY rarely. If I'm home and want to have a voice conversation with someone, I usually use VoIP (usually: FaceTime Audio) because it has higher quality than cell phone calls. If I'm out and about and want to communicate meeting time/place with someone, I'm going to send (or expect) a text message. So there's the question about whether it's worthwhile continuing to pay for a service that I don't use.
But the real problem is that modern apps and online services use your phone number as if it's a unique ID. If you give some organization your phone number, they'll definitely use it to uniquely identify you. Possibly to third parties.
And, even if you don't give them your phone number directly, since apps can slurp your contact info from any of your friends' contact lists, they've still got it.
And if companies can store this data about you, that data can get hacked and leaked. "HaveIBeenPwned" recently added phone numbers to their search because it's become such a concern.
If you worry about giving out your Social Security number, you should probably worry just as much about giving out your phone number. To companies or your friends.
This doesn't even touch on the problem of spam/phishing/fraudulent calls, which is another real problem w/ the phone system.
So, despite having the same phone number since 1998, I'd love to get rid of mine. Unfortunately, I can't yet because so many systems (ex: banks, messaging apps) do use it to identify you.
Plus, imagine you give up (or just change) your phone number. Now your old number is available for re-use. If someone were to claim it, they could then use it to impersonate you on any systems that haven't been updated with your new (lack of) phone number.