Nope, it doesn’t bother me one bit. Furthermore, I absolutely doubt that we can either change or affect it whatsoever. Besides, a warmer earth even by a degree is better for us, it allows more crops to flourish among many other things.
Plus, shall I again remind you “recorded history” is only the last 140 years? Unless you believe a young earth, then that’s pretty bad science to base an entire theory about the planet based only on .0000000001% of the earths history.
Meteorological charts go back to 1850 (thermometers etc) - so you’re getting on for 170 years. Still a small portion of the Earth’s history - but a reasonable point to measure when factoring in comparisons for the age of the Second Industrial Revolution (factories, urbanisation, smoke, grit, dust, grime, gas and chemicals, coal and mining taking place on a more ‘industrial’ scale leading to engines - powering and use of).
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To the later question of ‘So, do you think it was hotter or colder during the Middle Ages?’ - that’s a wider-ranging question, when and where? At which point in the Middle Ages? Circa 1000 when some believe there to have been the Little Ice Age? Or the Warming Period in SouthEast Asia & parts of Northern Europe around the same time?
Am off too bed now (late in the UK) - but am curious as to your answer and why (as well as where and when).