I'm not in Iota right now because I think it is overvalued. The tangle system is unproven and has issues that are not resolved yet. No one really knows if it is secure or not. A major driver of Iota being so high now was a pre Christmas run up after people heard Microsoft had bought a huge pile of IOTA and that they were a partner now - even though that was later clarified and denied: https://thenextweb.com/hardfork/2017/12/12/iota-partnership-microsoft-marketplace/

An infinitely scalable and lightweight consensus protocol for decentralised systems would be hugely important but so far I don't think Iota is it - yet.