One man's trash is another man's treasure. For $95/year it is a good deal for me:

* A full month from the time your bill closes until payment is due, mine bill always closes on the last day of the calendar month and isn't due until either the 1st, 2nd or 3rd of the month. For example I just placed a $18K tuition charge on July 1, it won't be due until the beginning of Sep.
* Mileage redemption for almost 20 airlines (not to mention hotels etc) - how many other cards offer this many choices?
* DC charges 95 cents per 1K points redeemed, I consider this a minor nuisance at most - a drop in the bucket barely worth mentioning
* Their website has never been an issue to me
* Numerous FTers - including me - say that they've always been able to negate the annual fee by choosing a retention bonus of either a fee refund or bonus points (I've always chosen the points)
* With the exception of only three of their airline partners (BA, Frontier and Korean) Diners offers the ability to transfer miles into anyone's frequent flyer account - this is HUGE. If cousin Ellie Mae needs 3K more AA miles in her account to get that dream vacation to Hawaii call DC and in 2 Business Bays - or less - the miles are there, total transfer cost $2.85. I've transfered literally hundreds of thousands of miles to other people's frequent flyer accounts thanks to Diners Club.

PS: Diners points are in huge demand on FT's Coupon Connection.