Friends love my photos at weddings etc. but I would never want to do anything close to a proper shoot for them, especially weddings...puts the fear of god into me to be honest!
'These people' will either persevere and learn the trade or will quickly have their fingers burned by ruining a special occasion for someone.
But I'm an amateur, very much so, but I want to learn. Taking my camera along to a wedding of a friend and snapping away unobtrusively is only going to help me. Plus, out of all the photos there may be a couple that come out well. Usually of frail great aunty Mildred that the photographer doesn't realise made a special effort to get to the wedding etc...these can be priceless to a friend, but there is no way I'm going to offer this as a service, yet(!)
Kit: 7D, Sigma 70-200mm 2.8 OS, Sigma 17-70mm OS, Sigma 30mm 1.4, Canon 50mm 1.8 II, Nissin Di622, Slik Pro 500 DX, SX220, Gorillapod 
Wanted: 77mm or 72mm ND500 filter, Sigma 8-16, Sigma 150-500