I'm currently comparing other IoT projects to IOTA, and it seems to me that IOTA really lacks critical features.

One of these is privacy: I mean, how can IOTA ever become the infrastructure of IoT if it can't guarantee privacy? Connecting IoT devices to a global network means sharing very personal informations, possibly more than what we share now on socials by means of our smartphones. What about our home devices? And health data?

Also I've been left to the status of IOTA in October 2017: at that time the wallet was having huge problems connecting and transactions didn't go through. How is the transaction time at the moment? Is it like 2 minutes as someone wrote above? If so, how do you expect IOTA to support IoT transactions? In IoT scenarios, embedded devices are expected to react relatively quickly to changes in the environment (think of house doors closing when I leave my apartment... 2 minutes looks like enough time for a thief to make it into my house).

There are excellent blockchain solutions popping up out there, look at IoTex: is IOTA going to be up to it? Honestly, I don't think so.