That depends on your site.
If your site is as big as facebook.com or microsoft.com you would be quite unhappy using shared webhosting. But if your site gets 1 visitor a day, you would be unhappy to pay for your own server that's doing nothing most of the time.
I need to know that is shared web hosting is better than normal web hosting or not. Most of my friends told me that shared web hosting is good but some of them have told me that it is not good.