Fuck yes.
It is the best thing that has ever happened to me. Hands down... and it has nothing to do with the legal and financial benefits. I couldn't give a smaller shit about that. In fact, I would wager if that is weighing heavily in one's consideration, then perhaps one should reconsider.
I love being married. My wife is an amazing human. She brings so much into our life. My life would be so much less without her. She has brought into the world my two favorite people. No joke. We've been together 10 years and if I had to go back, I would do it all again. Twice.
Don't bother about all the bullshit that surrounds marriage. If you love another person enough to chart the rest of your life around them, and they feel the same, then go for it. Its amazing. To be able to live and grow and learn with another person for your whole life is such a joy. She has been through everything I have since we met. She gets me, I get her, we get how we work together. There is no awkwardness, no trying to figure out where the other person is coming from, no explaining needed, we just know. She's my best friend on the planet. I could spend my life next to her and do anything. Talk, read, nap, play, whatever. We could go anywhere, do anything, conquer any obstacle.
Also, something changed when we got married. So, to us, it matters. I didn't believe it would, but it does. Before, I thought that nothing would change. I was true to her, I loved her, and I knew she loved me. I couldn't fathom what could change by going to some silly ceremony. Man, was I wrong. The instant that all finished, everything was different. Better. I felt bound to her, in the best way. I had professed my commitment to her in front of all those whom I most respected. I don't have the right words for it, but honestly, there was a step change. And the cool thing is, it has only gotten better since then. The longer I live with this woman, the more incredible she becomes, the more strength and love and character she shows.
Maybe we just got lucky, but I doubt it. I know of many marriages, intimately, where the spouses feel the same. Just love the other person with all your being, not one iota held back, and you'll be happy. I promise you.