My partner and I are in our mid 60s and met online 11 years ago. I lived on my own for 12 years before that after a long term marriage. We have been an item since we first met, we choose not to marry although have been living together for 10 years.
I met perhaps 20 men over a period of about 18 months on the dating site before meeting my partner. Some I met only once. Many men are looking for the younger model and you just can't help thinking, who are you kidding, have you looked in the mirror recently.
Several men told me very similar stories of dating a younger woman they met soon after coming out of a long term marriage. They were cashed up after the marital property settlement etc and were having the best sex they'd had for years. Expensive overseas holidays, dinners etc were enjoyed and when the money ran out, guess what, so did the woman. They all looked totally bewildered and said "I thought she really loved me". They were all struggling with the reality they had been well and truly done over. Other men are basically looking for a cook and housekeeper or the old saying "the nurse or the purse."
Some of the comments men made were that so many women posted photos that were old, glamour photos etc and misrepresented their physical attributes. Several commented that I was the only one they had met that actually looked like my photo. Same could be said of some of the men too. So being fairly realistic and honest is a good start. At least you don't waste time meeting non starters.
As others have said be very careful and do not disclose your address, email address etc until you are quite confident about the person. Always meet in a public place, have your own transport and it's helpful to rehearse a pleasant, non commital exit comment for those times when you just know it's going nowhere.
NEVER EVER send money to someone no matter how heart rending the story. There have been so many reports of the most skilful grooming, especially of older women. Some have handed over hundreds of thousands of dollars. If someone asks for money, even a very small sum, terminate the discussion/relationship immediately. That small sum is a bait. Once you bite you are in trouble.
Having given all the warnings, go for it. I took a surprising left turn and overall it's been great. Not always always perfect but life never is. Good luck.