I joined BYOAC back in 2007. I've quietly followed this thread since then. I've never had anything to add (nothing that would've been of value, anyway) ... In this case, I was quite content to sit under the tree and simply watch it grow.
Sometimes, certain actions in life take on a meaning, a purpose larger than themselves. This is going to sound cheesy, but I know I'm not the only one around here for whom this is one of those moments. Like the poster who mentioned how he felt at the end of the Harry Potter series, there's a certain breath of ... well, uncertainty now. The beautiful thing about this (and Pixel, you essentially said it yourself,) is that this is not an end, but a new beginning.
I am sure your family (past, present, and maybe even future) is very, very proud of you.
Congratulations! Enjoy it!