I have done since 2009.
I'm short-sighted and have gotten worse over the last 5 years.
I've had my current pair for about two years now, and I need to go and get a new proscription since I could do with getting a slightly stronger pair.
I'm also 18 and soon to leave education under 18, so I won't recieve a discount on the NHS. And without that glasses can be very expensive.
I used to wear mine only when in class, but found it such a nuisance to swap between them, and I regularly broke my glasses holder, so I just took to wearing them constantly.
Have done for about 4 years.
I much prefer my appearance when I have them off though.