We ain't talking about bikes here though. In cars, aside from some utterly stupid SMG BMW's, you pull back to shift up, and push forward to shift down, utilizing the forces on your body to make it easier.Literally, every single motorcycle on the street is configured this way unless modified post purchase. Up to shift up, down to shift down.
You can switch to a "GP" shift so you can press down to upshift in the middle of a corner, but as the name implies, it's usually found in racing.
Hence the "1 down 5 up" assortment of items to purchase. 1 click down to go from neutral to first, then 5 upshifts from there.
Don't knock it 'til you try it