Again, you are ASSUMING that possessing a PC equates to being able to buy such products. That is far more often than you can realize not the case. You need to get past that idea first before you can even put forth a legitimate argument. That aside, it doesn't matter whether or not they could pirate it, it matters whether or not pirating stops them from making a legitimate purchase, and there is essentially no evidence to back that up. There is nothing at all to say even one of those people who pirated the game would have bought it if the pirated copy wasn't available, and economic models show that the people in question wouldn't have.
As it is, theft of physical goods adds less than 1 cent per dollar to the cost at the register, and when a physical product is stolen it is removed from someone's possession. Piracy doesn't do that, and in turn has less impact on the cost of goods. Yet, as with all goods, the cost of non-sales is factored into games before you are allowed to leave the store with them. There's no 1 percent tax for shoplifters and if theft suddenly doubled nation-wide you wouldn't see a 1% increase in costs either, because the cost of all theft is purely intangible. Basically, it is made up for by the very nature of selling goods in bulk, and insisting that piracy has an impact above and beyond industry accepted margins, which is what you're doing, is foolish. If devs were getting killed by piracy we'd see Blizzard having as much trouble as Ubisoft, but they don't because it's not the piracy that is killing these devs - it's sub-par products and massively inflated dev costs.
That aside, if you don't want people to assume things about you or insult you don't lead off with an insulting assumption of your own. Simple as that. As soon as you insult someone else you've got no right to cry about them returning the favor.
You do not have the right to never be offended.