The benefits of being married:[1]
The personal negative results affected by lack of a wife: Anyone who does not have a wife resides without blessing, without Torah etc, and is not considered a man.
Marriage helps remove sin: When a man marries a woman, his sins are questioned as it says in the verse “you have found a woman you have found good, and you have extracted good will from G-d”.
[1] Rama 1/1; Yevamos 63b