It makes me so glad to see that the Javascript community will spend the next decade making all of the same stupid mistakes of useless overdesign that were made

It makes me so glad to see that the Javascript community will spend the next decade making all of the same stupid mistakes of useless overdesign that were made by the Java community (and probably others). Tangentially, what is it about the software community that makes us waste time with new and different - but not necessarily better - implementation technologies? Is this common in other fields?