short-bald you DO realize that the average Canadian male is 5'8 yes? (173cm). I have serious doubts that your ongoing failures can be attributed to being 2 inches below average height.
I question if you could reliably discern the height of random persons off the street within a 2-inch margin of error.
Blaming something outside your control for your failure at a skill and dedication-based activity such as dating is a pretty obvious and pathetic psychological defense mechanism for your ego. When the something that takes the blame is a personal physical attribute then it moves from pathetic to unhealthy.
Keep in mind that all the evidence you rely upon to substantiate your claim is biased preferences data. Do women like taller men - yes, instinctively so. Do men like large, symmetrical breasts? - yes, instinctively so. Neither men nor women ONLY consider one physical trait when choosing a potential partner. IF the women you are interested in find 2-inches an instant deal-breaker then they are probably shallow, immature or fantasy seeking.
And in the end, if you're really so incredibly bitter about it, there's always leg extensions. Done all the time in China, mostly by women - all you have to do is go in and get your legs sawed off and reattached with a skin graft two inches apart. The severed fibula bone will naturally grow out to fill in the empty skin tube. (Probably.) And you can run and play sports and drive clutch just fine afterward too. (Probably.) Good Luck.