Somtimes living in a marina (as far a people and being lonely) can be very good... Many boaters are friendly just because you are part of the boaters "club" of people. You can pick and choose and they can pick and choose who to associate with...... A marina dock can also be like a High school click of--you are too friendly-not friendly enough-don't drink-drink to much-have money-don't have money--judge you by size of your boat--judge you by condition of your boat.... You are Single and many are married; situations.
......You can meet people by helping them dock their boat, or any other easy help they need, OR, being Crew or going on charter fishing boat !
....You may find there are druggies, or addictive people to stay away from.
....Remember Quincy on tv lived on a boat, John Wayne in one of his movies.
Grey water discharge(shower water,dishes) may have no discharge rules in some marinas.
If you have ALOT OF STUFF loaded on your liveaboard boat you may have to secure it before you go sailing and make it overwhelming to take boat out.
......It may be nice to have an Onshore Storage unit...
.....There are lots of boats in Cal on Ebay, Craigslist and non-payment storage repos at boatyards and marinas. You have a great motivating adventure ahead of you .....