Some people in crypto currency space don't want to miss a single opportunity to earn something so if we think from those people's side then free NFTs are not waste because they know there might be a lucky day for them although it's all depend on luck there is no need to be serious or emotional it's all upto you as we have seen many unexpected things in crypto currency space in past so anything can happen in future.
Nothing concerning cryptocurrency are free or waste of time so I believe that cryptocurrency NFT is something everyone can be chance of doing that because no one knows if the NFT can be something that will dominate tomorrow that is why people who is into cryptocurrency don't like to miss use any opportunity they find in cryptocurrency