"One more thing ..."
(homage to the Steve :-)
On the livingpolymono yahoo list, a fellow had some profound words on the use of the word "want" versus the word "need." Provided it is not overused, and is not used either as a weapon or to manipulate, "need" can evoke a more sympathetic response than "want:"
"I want to be able to show more affection ..."
"I need to be able to show more affection ..."
The author advanced the case that the 2nd form was more persuasive by a long, long way.
I'm going to give it a try in my own situation, in fact.