Humans with our current level of brain development have been around for 200.000 - 300.000 years 

The absolute oldest human made structure we have found is about 25.000 years old

Yet the lost continent of Lemuria which has been written about a lot in old texts, describing a greatly advanced civilization with cities like Atlantis, 

and how over 65 million humans died when it was flooded by the ocean because they were messing with too many things,

is deemed to be a myth by science on account that we don’t have evidence of it

Well, we also don’t have a lot of evidence of what humans where doing the other 175.000 - 275.000 years, so I consider this rushing to a conclusion

In crypto since 2016 | Nature Photograpy | Experimental art using creative coding | Don't take my casts to serious

yep, u make a good point: much of human history is still a mystery, with long stretches where we have minimal evidence of past activities. our limited understanding of early human civilizations leaves room for unknowns