That's great! I understand totally what you said about the "loner" behavior. I am one myself (as is my husband), which is why I think Timber is such a perfect match for me. He wants to be in the same room I am in, but once there he goes about his business and I do mine. Once in awhile one of us will speak or whistle and the other responds. We have times we are more interactive, and we always have cuddle time at his bedtime, but a lot of our daily routine is spent enjoying each other's company without being "in each other's face" so to speak. I really like his independence and his spirit. If you read the forums here, you will see that each bird has their own personality and needs.
He must have had a good relationship with someone in the past to accept you so readily, which is a real blessing! Almost the first time I had Timber on my arm and started scratching around his head, he dropped his head on my stomach, tail feathers in the air, feet relaxed, and eyes closed. I thought "this isn't his first rodeo." One of his owners spent quality time with him and he remembered it and craved it. Now it's a routine for us. This didn't happen until I had been working with him for almost two months. It took some time for me to earn his trust, but once I did we've never looked back.
You will learn more every day about your bird's personality and what he needs from you (as well as what you want from him). What makes it so much fun is that even after you think you "know" him, he will surprise you. As Joe and Gilbert did, if you read those threads, he comes out with things from his past (vocalizations and behaviors) that are new to me periodically. I expect he will continue to do so. One of the most amazing things about the grey species, to me, is their memory!