According to a report I read today, there's a strong possibility of The Undertaker being inducted into the WWE Hall of Fame the night before WrestleMania XXXI. Taker's image is all over promotional advertising for WrestleMania but, as has been mentioned in numerous reports and in numerous posts over the course of the past 8 months or so, there's serious doubts as to whether or not Taker is able to wrestle. The reason he's in the advertising is because of the HOF back up, according to the report, if it turns out he feels that he's not up to wrestling.
It was pretty obvious at WrestleMania XXX that Taker just doesn't have the juice. Had he been in there with a more capable opponent, it's POSSIBLE that said opponent could have carried Taker through a good match but Lesnar just didn't have the necessary skills to do it. Because of that, I think we were given a genuinely clear and unfiltered view of Taker's physical condition overall. The spirit is willing, he genuinely tried his best and gutted it out despite being hurt, but the flesh is weak. As for Sting, he also isn't remotely what he was inside the ring 5 or 6 years ago, his last few matches in TNA were proof enough of that.
I understand that it'd be an extremely cool moment for Sting & Taker to be in the ring at WrestleMania XXXI. I get the nostalgia factor of it but, in my opinion, there comes a time when you've got to say fuck nostalgia and this is one of those times. If these two men can't deliver a great match to live up to the overwhelmingly high nostalgic hype that fans would build for themselves during WrestleMania season, then it's not worth it. When I watch a wrestling event, I want to see matches between wrestlers who're physically capable of putting on strong matches, not a couple of 50+ year old men who's bodies are ravaged by injury and the wear & tear of the business embarrass themselves.
Besides, if they did have a match and it turned out to be as lousy as many who're against it fear it would be, look how many of those same fans who wanted it would come out of the woodwork slamming Taker, Sting and WWE because the match didn't live up to their impossible expectations.