Because not everyone likes having the same setting. My cat characters do not belong in a Tavern. They haven't ever since the Tavern was rerelocated - and so they only go there if dragged.
If you personally feel that staying in one setting is more worthwhile, you are free to do so. In that way you would develop your knowledge of that setting.
Others may prefer a choice - do they feel like playing one style or other tonight? Wouldn't you prefer to choose which setting you hold to?
If there is only one fantasy setting avaliable, you would have no choice on the site.
Incidentally, I've found that a strong character with interesting faults and strengths and a solid, believable background has served me better in finding games than just how many rooms I've wandered through. If people go to another room because they don't want to play with someone else, just finding them won't necessarily change their mind.
- Chitara
If you personally feel that staying in one setting is more worthwhile, you are free to do so. In that way you would develop your knowledge of that setting.
Others may prefer a choice - do they feel like playing one style or other tonight? Wouldn't you prefer to choose which setting you hold to?
If there is only one fantasy setting avaliable, you would have no choice on the site.
Incidentally, I've found that a strong character with interesting faults and strengths and a solid, believable background has served me better in finding games than just how many rooms I've wandered through. If people go to another room because they don't want to play with someone else, just finding them won't necessarily change their mind.

- Chitara