I agree the so-called Bj's are over rated, never seem to produce the results and besides giving oralis much better for your woman. Some women just like to give oral even if its limited to tip of head. Some do it through love, some because it makes then feel more like the perfect bed partner. None are able to take in a whole penis.
However having your cock sucked immediately after male orgasms (occasionally) is both HOT and so GOOD. Its not just the idea ofevery drop being extracted. It is also a question of that hypersensitive feeling on the penis just immediately after orgasm. (Just like women's clits have tingles and that hypersensitive time immediately after their orgasms).