You guys are probably all in your mid-20s and live in flyover states. In a lot of places on the coasts, traditional gender roles have gone out the window.
I got married to my wife at 25 and it never crossed my mind to keep my own last name. At the time we got married, my wife was 45 and a highly paid M&A partner at an Am Law 20 law firm (she still is highly paid, but now in her 50s). I was working part-time at a restaurant and making less than $20K/year (pre-tax, although mostly cash). That didn't even cover her clothes.
I'm retired now, but she's still a partner at the same firm. She gives my plenty of money, buys stuff for the house and for me, and basically lets me do what I want until she gets home. I can run as many miles as I want as long as it doesn't get in the way of my household duties. I run a tight ship and that's not a problem. When she told me to take her last name, how could I refuse? I have a pretty good gig. That's a small sacrifice, and I'm proud of her and her name. She's accomplished so much in life and treats me so well.
Trust me. Do whatever your fiancé wants you to do. Don't do what a bunch of anonymous young runners tell you to do. You'll be with her for years. The guys here will never be part of your life.