If you are talking about predictions in the media that's one thing, and I'm not sure any scientists will have said categorically that x or y event will occur. That's not how science works. They work in terms of risk potential, and there is significant potential risk.
The models have been pretty accurate in terms of predicting temperature rise. This is from the NASA website on climate change. It basically takes climate predictions from aggregated model runs done in 2004, and measures performance against observations.
I do, however, based on the potential outcomes both to us and the environment from ecosystem collapses, think you have drastically underestimated the effects of climate change. Sustainability of forests, sea ecosystems, crops, pollinators, etc etc are all a threat to us and the environment. If we get widespread ecosystem collapse, aircon ain't gonna save ya.
I would urge you to watch the attenborough documentary 'Climate Change- the facts', which whilst a little glib, was a reasonable entry level investigation into the potential systemic effects of climate change, and our current status against indicators in those systems.