I have used Ethereum in 2 instances and have a negative observation or experience to share from both these.
- Used a platform built on top of Ethereum. Was mandatory to install metamask extension, create an account over there and use the addresses over there. Felt like an overhead.
- First time participated in an Airdrop. The transactions are still being processed on Ethereum network. Feels like it is extremely slow.
I haven't seen such issues while using Steem platform.