"Pride and Prejudice" - post 2

Why is Mr. Wickham Mr. Bennet's favorite son-in-law?

This question has bothered me every time I have read Pride and Prejudice. Why would the son-in-law he never wants to see again, who nearly ruined his family's reputation, be his favorite over a nice, rich man and another, very rich, man who has grown greatly since being humbled? The only slightly probable explanation I can think of is that Mr. Bennet sees himself in Mr. Wickham (although this is in itself a stretch for an answer).

Mr. Wickham is a servant's son greatly favored by the late Mr. Darcy (the current Mr. Darcy's father), but one who has fallen into gambling, promiscuity, and other "wild" behaviors. Mr. Bennet doesn't seem to have followed the same trajectory, but both men seem to have not been/are not economical and married very similar women with whom they fall quickly out of love. The narrator recounts Mr. Bennet's reflection on his marriage. He was young and thought the future Mrs. Bennet pretty, and as a result, married her. He never truly loved her, or at least not for very long. He is the polar opposite of his wife, and seems to find her quite annoying. In this reflection at the beginning of Chapter 19 of Volume II, he seems to regret that he cannot make her as happy as he perhaps should due to their varying differences and his unwillingness to change. Mr. Wickham appears to be very similar, finding Lydia attractive enough to allow her to come with him and elope when  he runs away from the militia. In the last chapter of the novel, the narrator informs readers that Mr. Wickham rapidly fell out of love with his wife. Neither men saved their money very well, and thus encounter problems in married life with rather expensive, superficial wives. Both men also put all their hopes for security in one person/event -- Mr. Bennet in having a son to ensure that Longbourn stayed in the family, Mr. Wickham in Mr. Darcy to always take care of him and give him whatever he wanted because he was included in his father's will. Neither one finds security in their person/event, thus they must rely on themselves for security, or become resigned to their fate.