Those of us who move around a lot have jumped on to the cellular bandwagon. The attractive thing about cellular is that you can have a single phone number for people to call no matter where you are. You can also set up a voice mailbox, call forwarding, etc. All kinds of bad things happen. The system is busy.
Calls drop out.
Echo is tortuous. Forget about dialing into a conference bridge, the other people on the conference call soon ask you to drop off because of the static you bring in. The only difference I can see between those choices is that analog can be generally annoying and digital bypasses that by frequently failing altogether. Even if the voice quality was generally good. The system can be hard to use.