Hi,
In my view ..
same as timberbird
Because some browsers don't allow cookies.
If you want to store small amount of data like visited date like some other color...
you can follow this code for checking cookie is existing or not
if (Request.Cookies.Count > 0)
{
HttpCookieCollection hcc = Request.Cookies;
string c1 = hcc[0].Value;
Request.Cookies.Add(new HttpCookie("name", "value"));
}
So,my suggestion is don't develop process which is depends on cookies
All the Best