I'm really starting to believe I have no soul. I didn't really get choked up for the tribute part of the movie. (I don't consider that a spoiler. Everyone knew they'd do something). I thought the ending was done real well despite my apparent lack of human emotion. The scene on the beach with him playing with his family didn't seem like a good justification to merit a discussion about his retirement from the crazy lifestyle and it felt like it fit too neatly in a nice box. That's probably why it works so well. Everyone knows why that scene is there and that baggage lifts it.
Side note, don't you think Walker and Diesel should have had one more point to point race for old times sake? I really thought they should have had them race and after a winner is determined, (presumably Walker), then he drives off into the sun.
I don't think them racing each other would have worked, since they wanted to show that he was done with that lifestyle. I thought the ending was amazing, the tribute was my least favorite part of it actually. Would have liked it if it was just Dom's voice over while he was driving, rather then a montage of the previous films.