I've always been frugal, but only "had" to be when I was in my early 20's. The ex and I made oodles of money and spent freely while saving (me saving...he was a spender). We traveled extensively and enjoyed life...but the marriage was awful and stressful.
Now, I'm frugal because I want to be. My house will soon be paid off and while the ex left me with some debt, he didn't want any of the house so I think I made out ok. I could be paying minimum on the debt and live the good life, but I want my retirement years to be enjoyable so I'm focusing on the debt now.
While I was frugal in my 20's because I had to be, I'm frugal now because I want to do more to save the environment. Purchasing less new avoiding packaging to fill the land fills, and reusing items found in thrift stores and my own home. Just being a good steward of my blessings I guess. Little or no meat because that might mean one less abused animal. For the same reason (and health reasons), I buy chicken and beef that are grass fed and organic (no hormones or antibiotics) and 90% of my non-meat purchases are organic.