I know the title is contentious, sorry but if you take out of the equation: the first layer adhesion, I am convinced that the downsides of PLA outweight the upsides of which the upsides i see are: Biodegradeable Great range of colours Low smell/particles Downsides i see are: Limited applications in the real world Must be cooled while printing or it will curl,warp,wreck the whole print Expands alot Cant print fast with it unless you have an epic cooling strategy Weak Brittle And so on... Its not even cheaper than other filaments so it does not have that going for it. Having had to print with out a cooling fan for many months I realised that pretty much the only reason for a cooling fan is PLA. PET,PETG,EDGE,Colourfab_HT,ABS,ASA,PC i have printed all with no cooling with very satisfactory results. I assume that pretty much every other filament does not need cooling other that PLA but i have not tried everything such as PP, Nylon, Flexibles etc. I have only had any 3D Printing experiance for 2 years now and so I am still quite ignorant but learning is the point. So I guess my question is, why would anyone use PLA? It is way more fiddly than say PETG based filaments which are my go to filament after trying pretty much all i can get my hands on over the years. Am I just spoilt as PETG is now more commonly availible than it was a few years back AND I started with a BigBox which allows for higher temps? Having not had to use blue tape, unheated beds, non all metal hotends etc. Have I just been lucky or is there a legitimate reason PLA exists or is it just its green credentials as such? Genuinly wondering what peoples opinions on this are as I cant see myself every buying PLA ever again unless that was the only way to get a property that is not availible in any other form such as woodfill, clay, metal filled, matte etc. Hopefully this post wont result in angry replies, i am just genuily wondering if PLA is just a relic that hangs on only due to low temp printers exsting.