You achieved very impressive returns - at 15% pa. Better than Warren Buffet. Justified to quit your work to focus on managing your stocks.
In comparison, try as we might, we could only achieve average of 2.5% return on our total net worth. Here's the breakdown (we have no loan):
1. Main property ($1.65m) - staying here so zero returns
2.
CPF - $1.1m (total of OA, SA, MA) - interest $35k pa -- 3.2% returns
3. Stocks - $1m -- dividends $50k pa -- 5% returns
4. 2nd property - $1m, rental (gross) -- $40k pa -- 4% returns
5. FD : $300k. Interest - $300 --- 1% return
Total net worth : $5.05m, returns : $125k pa. Or 2.47% pa.
For us, our salaries still provide the best returns. So we will continue to work till 62 or later.