I'm surprised this isn't getting downvoted to hell considering how insensitive this message is and how simple minded one has to be to blame such a tragedy on one person.

Maybe it's my very happy life with my wife; once I got together with her I finally started understanding how important a supportive partner is.

One can't simply tell you "I love you" and not detect you're on the verge of a suicide.

What arguments do you have against my points?

I actually misread your first sentence, I thought you were blaming this fully on his wife. Who says his wife wasn't supportive as yours? There's really no argument to be made against someone who believes their spouse can feel and fix all their problems for them.

I think we're not that far off but you seem to generalize a bit.

It's not about being weak or relying on your partner to think or act for you.

There's a huge distance between "being dependent, passive, unable to fix my own problems" and "being on the brink of suicide" however. For me a loving partner should be able to detect that you're struggling. If not, either you are extremely good in hiding your problems (and horribly misguided for doing so), or your spouse lacked perception (or care) for you.