Is there any situation where you do recommend an irrevocable trust?
This is way beyond my area of expertise. I deal with patents and trademarks. I didn't even take Wills/Trusts in law school -- just studied enough to get through the bar exam, and like I said, that was 10 years ago....and in TX.
With all that said, the irrevocable trust is typically used for really rich people that want to shield their vast fortunes. The two biggest reasons to have one are to reduce your taxable estate (which is around $10million if you're married), and to prevent a creditor from coming after your personal assets.
Since the vast majority of people don't have $10,000,000 in assets, doing it for reduction in estate value is pointless. If this is a problem you have -- then shielding $50000 in disney properties is probably not your biggest concern.
As far as creditors -- this is largely dependent on what you do for a living. If you work in a high risk job (e.g., surgeon, OBGYN, etc...), then protecting your assets from creditors is going to be a big deal. Aside from that -- the only two other instances where you'd have unexpected creditors would be if you accidentally maimed/killed someone in a car wreck or you/family member have a ton of medical bills that you can't afford to pay (i.e., get cancer, young child has heart condition, etc...).
An umbrella policy can protect you from a lot of the negligence stuff. As far as unforeseen medical expenses -- that's probably the most likely reason.
I'm sure there are other reasons -- but those are the two biggies that I can think of that would affect most people.