It even happens in the Land of Oz! I am in a big slump right now! I have built car and bike models for about 38 years now and this is my second " I couldn't be bothered" modeling slump. About 15 years ago I had been building kits like crazy for quite a while and I suddenly had 2 bike kit paint jobs go south on me one after another. Immediately after the second one, (the paint was still wet), I went into my model room, packed everything model related, paints, tools, etc, etc, into boxes, and put it in the shed.
For the next 3 years I never gave modeling a second thought. I quit my model club, and never even went into a hobby store. Not even once!! And it never bothered me a bit. Then one day i was passing buy my former favorite hobby store and went in for a look. I came out with a Tamiya Kenny Roberts RGVT 500 Grand Prix bike kit. I then had to replace almost every jar and tin of paint because it had dried out!
With that bike kit it all started again. I went back to modeling as I had been before, joined my club again and all was well in Model Land! Then about 12 months ago I slowed down again. I have only finished 2 kits in the last year! Nothing interested me enough to peak my interest. In April I heard about a Ducati Panigale kit that Tamiya were going to release and that got me excited! I finally got it a few months back and started it the next day. (Hey Rommelkiste, you know the one I mean). I did the engine, frame, wheels, exhaust, and all the paint on the body work, and came to a standstill. I haven't even looked at it for a month now! Apart from the formerly mentioned 3 year hiatus, i have been in my club for 19 years and I have only been to one of the last six monthly club meetings and I have found that I don't miss it at all. To be honest, I don't think I will ever go back again.
I will finish the Ducati in time and see what happens then. I have a couple of half finished cars too that may or not get done at some stage. Anyway, long story short, it happens to a lot of us so I wouldn't be too concerned, so just enjoy whatever else grabs you and see what happens .
Cheers