I don't like anchoring at a professional level because I think that the anchored stroke is a less difficult skill to master than the conventional stroke. It doesn't mean the ceiling is higher but it does mean that more people can reach a higher level.
At an amateur level good arguments can be made either way. Watching someone struggle with their putting isn't much fun for anyone, and if it helps some of the 20 handicappers out there who dread getting to the green because their putting is so awful then I'd see that as a good thing.
But I do believe strongly that one set of rules for everyone is one part of what makes golf a great sport. Watching professional golf is great because they're playing exactly the same game we do each weekend down at our clubs. And it's not us playing their game either, it's them playing our game. There aren't many sports out there where any of us can enter local events and qualify to play in the competitions at the pinnacle of the sport like you can with The Open (US Open too I believe). In most sports I'd need to be drafted or signed etc.
The most worrying thing however is the attempt by the PGA Tour to wrest at least some of the control over the game of golf away from the two organisations who have overseen the development of the game into what it is today. The USGA and R&A might be slow moving, even a little misguided at times but their motivations are looking after the game of golf. Like any similar organisation, the PGA Tour is beholden to the money that keeps it running. And the professionals are all tied to OEMs who pay them a lot of money to play their equipment. I don't fault either group for doing what's best for themselves, but I don't want them having a say in the overall direction of the game of golf. Neither the PGA Tour nor the pros are in a position to take a truely long term view on what is good for the game.
So I'm not too fussed about whether or not anchoring is deemed legal or illegal but if the PGA Tour's very public attempt to stare down the USGA and the R&A is successful then I think it's a sad day for the future of golf.