[I haven’t had a telephone other than my cell in six years. Stopped all the crap calls. ]
I usually only use my land line for calling out to other numbers. I have considered canceling it and getting skype and using the extra money saved per month to boost my online speed.
You might dump your land line. Cell phones have even more protections and remedies than land lines.
There are a couple of options other than a land-line and I have never missed having one. Gmail now has a voice option, so that is another option.