Loads of other clubs do it, mate. And it's getting to the point where players get attacked (not fully attacked, I don't want to exaggerate it, but why take the fucking risk of a fine, a points deduction, or worse?).
I've already said that decades ago, literally, I went for a stroll on the Maine Rd pitch at an end-of-season game along with a few hundred others from the Kippax. No hassle with the few elderly stewards who were around. They knew we'd get back over the wall (to the Kippax) in about five minutes, which we duly did. There were no selfies; no mobile phones; no social media. Just a couple of hundred lads at the most who wanted to walk on the Maine Rd turf for a few minutes.
This has become something entirely other. I of course understood it for 2012 and, given the circumstances, I understood last year, although it went on too long before they cleared the pitch — we were getting well pissed off in the stands — and I don't at all identify with damaging the club's property (i.e. the goal at the South Stand end) as a way of celebrating that you're a supporter!
Let's just leave it out, eh, unless it really is a title-deciding final game of the season and settled in some extraordinary way.