They can snigger all they want.
Even if I could use a touch screen like normal folk do I wouldn't because I hate the notion of touching the screen at all! I like a clean screen with zero fingerprints.
When someone hands me their tablet 'phone to show me a photo, I find smears in the way and the follow-up farce of wiping and loosing the photo because I've pressed a hidden side key or I've simply swiped the photo out of existence makes it more of a chore to look at someone else's holiday snaps than EVER before.
Thankfully, I don't need touch screen technology. I'd hate to be dependent on it.