My first 'real' camera was a Nikon Nikkormat ftn 35mm SLR with a 50mm lens. I shot thousands of slides with it and some black and white film before getting a 28mm lens and discovering the compositional joys that wide angle can give. It wasn't until 2004 that I bought another camera, the Minolta DiMAGE Z3.
The A700 developed a fault that caused shading along the edge of images. At the time the departure date for a trip to the USA was near and I had to make a decision, send the camera for repair or upgrade. The upgrade idea had a certain attraction so I ordered a Sony A7 full frame that had just been released. As the departure date moved closer calls to the camera dealer resulted in reassurances that it 'should' arrive in time. It didn't arrive, so two days before departure I bought another Sony camera, the recent released A6000. I didn't cancel the order for the A7.
In April 2018, I am considering my range of cameras and lenses. The lenses are the main problem, being a variety of Sony A, E and FE mounts, Minolta A mount and a Voigtlander FE. I have a Sony LAEA4 A-mount to E-mount lens adapter for the A-mount lenses. This was useful before Sony and others had created a broad range of E-mount lenses but now it and the older lenses can be replaced with quality lenses specifically made for the mirrorless E-mount system.