DonebyForty Yes, that makes total sense! I hear you on the savings rate, too. I always figured I lived lean enough (and had enough saved up) that I could handle things even without my main source of income. However, after leaving my job last year and having a tough time with freelancing, I realized not having a job was more of a mental drain than a money one. I like knowing I have control and can call on another source of income and increase it when I need to. 
I live in NYC where I never thought buying rental property would be possible, but am looking into buying rental property in the Midwest where it cash flows and have someone manage it for me (turnkey real estate investing I guess some would call it). I agree with what Mike said about leverage and tax advantages, but I’m still a newbie to real estate investing so I can’t so how it will go. I have a very small amount in P2P…I’m at around 6.3% It’s okay but I don’t know how liquid it is and it still is relatively new…I’d prefer investing in the stock market.
Most of us think of investment income as just the cash flow we get from bank interest, bonds, share dividends and property rents, some of which comes via a super pension.  But a more complete view is to also consider how growing the value of your investments can add to your spending potential.  This total return approach generates income from both income and growth to optimise spending from your portfolio across all market cycles, aligning cheap and expensive investments to your goals.