Right now Bitcoin's price is rallying and block are full. According to blockchain.info backlog of unconfirmed transactions is 11.6 MB right now and as far as I know there is now spam or stress test going on. How worse does it need to get?
The median block size of 2 weeks is as high as 0.95Mbytes.Check it here.
https://chain.btc.com/en/Scaling bitcoin is necessary!