I don't think that matters, Janet. Sometime's when we're feeling down all we want is some attention and encouraging words. A little validation. I see no reason not to try to give them. Showing "weakness" like through making threads like this is a big taboo, especially for males, so just being in a state deep down to feel desperate enough to make a thread about it - drunk or not - validates som recognition, in my opinion.
And then there is this myth that people who actually consider suicide does so in silence and no calls for help, and that only "Drama Queens" and "attention whores" make threads like these. It couldn't be further from the truth - most people will call for help several times before their first suicide attempt, and if they're not taken serious or met with coldness, contempt or ridicule, or even just silence... Well, it'll only deepen any possible depression or general misery. Furthermore, if this was a serious call for help, I'd rather know I said something to help. If people think that is ridiculous or makes me a fool, so be it. I would have a hard time respecting myself if I let some misguided sense of "pride" get in the way of being a good person. And while it's true you probably don't make threads like these without staying to read the responses it gets, that doesn't mean you're not serious about killing yourself - even if you're not about to do it that very moment.
In short, even if it's not serious, showing compassion and sympathy never hurt anyone.