There are many effective ways to argue against what you're saying, but I'll choose the easiest.
You said "perhaps" it doesn't matter. Well, perhaps it does matter. If there is even a small chance it does matter, we might as well act like it matters.
You said "perhaps" it doesn't matter. Well, perhaps it does matter. If there is even a small chance it does matter, we might as well act like it matters.
Ah, Pascal's Wager.
There's a small chance that you giving me $100 matters, so surely I'm going to find a check in my mail box next week, right?
...and so on.