Now you run on the assumption that your opponent only wants competition. I "bother" to play because I want to have fun and hopefully my opponent feels the same. I want to have a memorable story, not an over-analyzed series of flips that ends with one person the victor but nothing that makes me say "Damn, I'll never forget that game."
And I'd rather play a thousand "gubbins" than 1 person who considers himself a "pro".
I guess I'll never understand the need for some players to turn every game into an ego stroking event. If I want to compete at something, I'll enter a fencing tournament. Or, I could learn to play chess at a high level. Both of these are what many would consider competition endeavors.
I count myself lucky that all the competetive players have stayed with 40k in my area. At least I don't have to decline games with anyone just because I know I won't have fun.
If my opponent was counting cards, especially mine, I'd just hand him my deck so he could count it at his leisure, and go find someone else to play a game with.