*opens can of worms*
Because 99% of people who claim to be professional web designers aren't.
They're just nerds like me, who can make a website. As can the majority of 13/14/15 year olds who need to produce a website to obtain a ICT GCSE.
Unless you can live off web design alone (as one or two who will be reading this can), then its not a profession. Its a hobby. A hobby you can get paid for. Tell me, you mentioned you earn £30,000 a year. You also said you have done over 100 websites in the past 5 years. Now, you never earned £150,000 in five years from doing 100 websites.
So does your profession pay all your bills?
If it does then fair enough, I'm wrong. You in that minority who are professional at what they do.
But if you work in another job (like at a restaurant) to cover those bills and pay for season tickets etc.
So its a hobby you attempt to get paid for, not a profession.
Using your example from earlier of photography. I could go and buy a disposable camera, take pictures and attempt to sell them. I couldn't make a living out of it because I am not a professional. Professional photographers however, can make a living out of it.
Anyway, thats my opinion? Dont like it? Ah well.