Hi! And welcome to GCM.
Yes, we have good relationships with our grown sons (and our 15 year old.
) When I was first parenting, I'm not sure the term "attachment parenting" had been coined. But I was very fortunate to have a wonderful parenting example in my step-mother who was basically an AP mom (again before the term was coined.) When I was 11, I became a big sister to my half-sister and then when I was 13, my dad and stepmom had my next half-sister. So those were very formative experiences for me. I knew how I would care for my children when they came, I planned to have homebirths and breastfeed, I knew that I would be responsive and considerate in how I treated my kids, knew how to handle children without spanking because I'd seen it lived out with my little sisters.
So the short answer is yes, we were basically attachment parents from the get-go. (The term may now carry more freight than it did originally.) That's the short version!