No we're not. Here is a graph that shows global temperature increase https://berkeley-earth-wp-offload.storage.googleapis.com/wp-...

And you can find loads of different sources showing the same. Search for yourself.

So now, as a rational person, you should consider the source that told you different and be angry that they were lying to you. And you won't trust that source again, right?

However if you go further back in time (50 million years or so) it seems possible that the Earth was hotter than today, modulo all uncertainties and approximations needed to get to these figures: https://en.m.wikipedia.org/wiki/Geologic_temperature_record

Well yes, and if you go back even further, to a few billion years ago, the entire surface of earth was glowing magma.

But I'm kind of thinking more recent history than that :)

Humans have existed for only 200k years and I'm not sure primates let alone hominids even existed 50 million years ago. So irrelevant to our survival.

Which may be fine for the Earth in general, but perhaps not for the human civilization and agriculture we have built over only the last few thousand years.

Absolutely!

Do you have a source for that fact?