There is nothing wrong with transferring to Marriott I’ve done that a few times, and have found value including a 40,000 point redemption to stay at a Sheraton at Pearson Airport in Toronto thereby saving me $450 off the rack rate. I would not have ordinarily have booked that hotel had it not been for the points.
The other thing to consider is Marriott lets you transfer your points to like 30 partner airlines including the like of United which you would otherwise be unable to do in Australia often with a bonus if you transfer enough points. Indeed, in 2024 I bought several thousand dollars of Choice Hotel points as they were running a promotion whereby you could transfer 2000 Choice points to 1600 Qantas points meaning you could buy Qantas points in effect for 1.25 cents per point. I’d challenge anyone to name a more lucrative opportunity for buying Qantas points