What you have just told me is that you have not done any serious research into the actual effects of climate degradation. Whether or not you had a personal experience of there being lots of insects, it is a fact that their populations are in freefall. Fertility in many clades of life is dropping off as well due to excess heat (yes that's a thing).
Agriculture will collapse regardless of this as our soil fertility plummets as well. There are always more fertilizers, that drain into the ocean and cause algal blooms that create dead zones where there is no oxygen. Happens more and more.
Idk why you are so confident that it will not dramatically affect you.