Soy is supposed to have a weak estrogen-like effect. I don't think it's a problem for males unless you eat a LOT of it. I have some soy milk on my cereal every day (usually two bowls of cereal, actually) & haven't noticed any negative effects. I'm also lactose intolerant, and yes, the consequences of that can be... unpleasant.

The cheapest reasonably-good tasting soy milk I have found is the Kirkland brand from Costco, sold by the case. It claims to be organic and only has ingredients that one would recognize. It isn't one of the varieties that pretends to be like milk.