You are grieving the loss of your old life. The freedom, the lack of responsibility. This is normal and healthy. Taking time to be sad and properly mourning is important.
Maybe it helps to write about your travels, to fully remember the good and the bad of it.
Take time to process that sadness and sit in it. Recognizing this will help you grieve. This could take months, maybe longer! Maybe you are also a bit resentful that you didn't live in the moment more then, and that you tried to grow up too fast.
Then you'll be able to assess your life right now and decide if it's the life you want or if you need a change. And being honest with your wife will go a long way, so she understands that you're sad and mourning a life you used to live, even if you prefer this life.
It's normal to feel depressed while grieving.
I've lived a lot of different lives, traveled and adventured with nothing a lot of different ways. Sometimes I look back at what I had and have strong regrets. A few years ago they got so strong I decided to blow my life up and go for a big backpacking trip with just enough work to sustain it indefinitely.
It was really fun, but it was a new kind of hard. After about six months I realized I missed deep connections with friends. I missed staying in one place, in building a life with folks I cared about around me - a real community. I missed hosting backyard BBQ parties, playing games with folks, spending time with each other, supporting each other through life's challenges.
At the end of the day, the adventuring was great but it wasn't enough, it was fun, but too souless to continue. The new friends every day, the new scenery, it was a grand adventure, but adventure isn't enough. I need a deep community.
So I picked a place to settle down and started building that life. Today I've got more neighbors as friends than I can possibly spend time with. I'm building deeper connections with people I care about. This was the missing piece.
And sometimes I look out window and feel regrets. I see the moon and want to be out in the woods again. I want to be done with working so many hours to afford this life. But I remember being so lonely I could hear my heart knocking around in my chest, of meeting people every day I'd never get to see again. And I focus on being grateful for what I have. The gratitude goes a long way to making me feel better. I have possibly the best life I could, and part of that means trade-offs, of all the other lives that have to die so this one can live. I grieve those other lost lives, but then celebrate this one with things that make me happy and grateful.
I hope my rambling helps. As you reflect I hope you find out what kind of life you want, and at least get a chance to feel the sadness and regret, and know it's possible to regret and move forward. It's possible to grieve an old life and still be grateful for the one you have.
And maybe, yeah, at the end of that you need to blow it all up and go do something else. I wish you the best. Feel free to write me if you want to chat more about this