I initially retired @ age 60 as a widow & received 71 1/2% of my late husband's social security, but I retired from full time work and only worked part-time. I fully retired @ age65 in 2003 w/full SS benefits on my account which was in excess of $2,000/mo. net. I had no debts as home/car, etc. paid off & had an employer-funded lucrative pension which I rolled over into Morgan-Stanley nor have I ever touched the principle.
From 2003 to date, I have enjoyed double-digit gains on my pension investments as my portfolio was initially somewhat aggressive with 70% stock/30% fixed. I reduced this to 60/40 four years ago and on my 80th birthday further reduced to 40/60%. "Money" magazine states you should not be invested in percentage of stock more than your age, less one hundred which means I should have no more than 20% in stock. I am not willing to go that low in this current economy. I think counting on an average of around 3.5 to 4% is a bit more realistic than 6%, but as long as the economy is doing so great, I would be more aggressive until there is a downturn. In essence, stockpile it while you can.
Obviously if I see the worm turning toward a (God forbid) Democratic president in 2020, I would greatly reduce stock investment percentage. Regardless, retirement is somewhat scarey and you hope not to outlive your money & to be able to handle the unexpected expenses.