What a great discussion.
I'd like to add a few items which I don't recall mentioned specifically herein:
1) You're buying or writing options on a company stock. Make sure it's a good one! Pick the stock first and the option second. So you need some way of determining value on that company. Maybe it's a company you already know/own that's had a good run (covered call), or a new company you WANT to own cheaper (written put). Don't bet on the duds or speculative.
2) Juicing your returns by something like 0.5% may not look like much, but if your withdrawal rate is 4%, that option premium earned makes it 3.5%. And that, seems to be a perpetually safe rate discussed ad nauseum in here.
3) I agree writing options is best, but buying long term options (LEAPS) on blue chip companies can be very profitable with reasonable risk. Just understand you're holding these perhaps as long as 18-24 months or slightly longer. So its long term, just not indefinite.
For instance, Apple dropped 33% from 225 to about 150 late in 2018.
Buying "in the money" calls expiring in Jan2020 or 2021 provide a way to get the stock return for less money. But size your position properly. If $20,000 is a stock position for you, that's a single option and stick with that discipline.
<for disclosure, I own AAPL but not this option>
In this example with apple at 150ish in late Dec2018, a Jan2020 120 call might have sold for $36 (30 in intrinsic value, and 6 time value premium), so at expiration the stock needs to be above 156 to make money. If you bought a 150 call, the premium would be much higher.
Because there is an expiration date, be careful on the entry point. Like I mentioned, looking for good entry points on blue chips such as AAPL, Walmart, Home Depot, Berkshire Hathaway, Intel, McDonalds, etc is needed. When the market takes everything down with it, stocks such as these can rise quickly back. Be patient.