Come on, give the guy a break! You asked if you could record there, he said no, why not just leave it at that? Yes, it's great to see/hear recordings of gigs we go to, and that's why bands do live LPs/Videos! Would you be so keen to buy the Live DVD of a gig from the other side of the country, if you already had your own recording of the gig you attended? Perhaps, but then again, plenty of people wouldn't. Fuck it, some people might even give upcoming gigs a miss if they've already seen the show, we all look forward to seeing new stage-sets, guessing set-lists, seeing who looks their age!
Your intentions might be totally based on the video only being watched by you, but would you let any of the other rabid Saxon fans on here have a look at it? Oh, go on, pleeeeease! Just one? You let them have a copy, and they let their best mate have one........etc.
Also, from the venue's point of view, let's say they do let anyone film "just for personal use". These days we all have easy access to hi-tech kit that will produce quality results. How long do you think it would be before some bloke decides that because he's got a sooper-dooper top-of-the-range camera, he needs his mate to bring in his hi-tec sound recording kit? And a grip man. And a second cam etc etc. Before you know where you are, you have a full-on film crew in there. And then they are so proud of their product, they decide to stick it on Youtube, or similar. Lovely, there goes the band's live dvd down the pan. There are music industry lawyers out there who have nothing better to do than crush people who endanger company profits. No venue is going to place themselves in a position where they could be fucked hard by a record company pissed off about their upcoming live release being scuppered.
And what about the photos taken with high quality digital cams - not like the bad old days when your shitty snapshots would be dismal, these days even your phone takes superb quality pics. What about the pros who take pics for a living?
What about the venue's H&S policy, what happens if you have your eye to the viewfinder and you fall over and twat your teeth out? Someone would be in deeeeeep shit for that. And you would possibly be advising your solicitor to fuck them for every penny.
If you are so desperate to film the show, write to the band's management and if they are genuinely OK about it, get written permission and get on the crew list. If not, enjoy the show and stop fucking whinging about having to abide by the rules like the rest of us.