I married late in life. (age 30) That made it hard for me to have the flexibility of habits that the joining of two people need. It has been 25 years now. It is still work. But, I believe that it is God's Work, so I persevere. Very few have ever been called straight to the Monastery or Convent. Marriage is for the rest of us. God's commandment was to "Go Forth and Multiply".
So we do. Sometimes we don't do it well. Sometimes it is easy and fun. However it is what we are called to do.
I'm glad I married. I'd be lonely and alone if I had not, and in my case, my wife (and St Maximillian Kolbe) are the cause of my conversion to the faith. So without marriage, my soul would have been truly lost. For this alone, I am forever grateful.