I'm 64 and my husband is 71. Throughout my working life, I made the choice to live within my means. Some 30 years are when my daughter asked why we didn't have a house at the Country Club like her friends, I told her we like where we live, and that's our chosen life style. She thought we we holding her back from being part of an elite circle, but she survived.
I agree with many of the posts. What is *easier* depends on where you came from in the US - you can't really compare the cost of living in NYC or Boston with Gnaw Bone Indiana (yes, there is such a place).
IMHO, the big plus at any age here is access to the NHS, and anyone who has faced a major medical problem in the US knows how fast the bills rack up. That was a constant concern for my husband, and our medical insurance premiums alone were nearly $12K per year.
Other things being equal, on either side of the pond, day-to-day life is mostly as easy as you make it. There will be pros and cons, and for each of us the answer may be different.
I love it here. I love walking to the shops, and take pride in NOT using our very economical car. Sure meat is a bit more expensive, but leeks are a gift...and I can ALWAYS find them. And in a given week, we may eat more leeks than meat, by choice.

In the end, most of us are as happy as we make up our minds to be, and the finances are as easy as we decide they will be, barring a catastrophe beyond our control.