I have OCD with thoughts, logic being one of the concepts I hold on to tightly, so I'm very much on the lookout for these logical faux pas. Even when someone seems like they're being logical, ask yourself, is this really the inference to the best solution, or are these guys just trying to rationalise a point they're already committed to? If actually look at the debates and arguments a lot of people put out, you'll realise how weak and fuzzy their logic is. Weak enough for my theist friends to shake their heads and go "you're making us look bad". Even one of my best friends said something like "you're not a Christian so you don't think being gay is wrong, but I'm a Christian and that's all there is to it" and this is just one example of a long long list of similar reasoning. Eh, I really think that if you keep your eyes peeled for these things, you would not be impressed.
We keep different company I suspect, I dont hear people reason like this, not at all. It sounds like a straw man, itself a logical fallacy, the kind of rationalisation which you mention yourself.