Okay, fair enough, I understand that. But I do think people need to remember where dash came from; instant and private money. It's the differentiating factors that made dash. As the OP pointed out, asking for an email address does not instil "private", it simply solves a different problem. While I appreciate people don't want extra charges, on balance, it would be a minor and one-time charge.
Can someone tell us what other options are available?
(...let me just explain my thoughts on the privacy side and background here...)
I don't really know anyone working on Dash that doesn't care about privacy and it's why I joined Darkcoin instead of any other project. That and also Evan's 2-tier scalable solution which means we don't need to hide info on the chain like in ZCash or Cryptonote, because I don't think any mainstream users are ever going to trust that with everything hidden, and second it's a honeypot for anyone to come in and take over distribution without any analytics as to how things are distributed and moving around.
After 2 years I think people realized it was unrealistic to believe the mainstream is ever going to adopt a purely 'private' currency because the demand just isn't there. I would guess 95% of mainstream users don't care about anonymity. If they did, they wouldn't be using ApplePay and chipping themselves to buy stuff. So Darkcoin evolved into Dash and with the 2-tier network there is so much more we can provide that is wasted if we just stick with the privacy features.
The way things are going, the mainstream is adopting new digital payment systems (that are mostly not cryptocurrencies which are too esoteric and hard to use) so I think that is really our target market and the rebrand to Dash was a smart thing to do to position ourselves to compete as such.
Where we are now I think is the smartest way to both build a mainstream digital payments system and second make sure users can be anonymous if they want. Most Evolution users (new users not us lot) won't care about privacy at all and signup with their email without thinking twice, but for those who care about the right to privacy (most people here right now), we have the only mainstream system that lets you stay private if you want.
What i'm trying to say is, if you want a totally private system, e.g. I2P that only works on a desktop, that's fine but I would challenge anyone who would claim that that can be a mainstream system with 4000 masternodes and multi-million $ market cap and a large userbase outside of e.g. the darknet (which I think will just stick with Bitcoin anyway and not small chains that aren't used much). The mainstream market on the hole just doesn't care about anonymity when purchasing products. but for those of us who recognize that the mainstream is going towards integrated digital payment systems, i really think the best way to get anonymity there is to build it into a great product that the bulk of users (who dont care about privacy) will use because it's useful, convenient, accesible and opens new markets, with privacy built into that. Privacy is one of our core ideologies, we just have to be smart as to how we give that option to mainstream users. Making them setup darknet boxes to access it is not the way I think, building in as an option in a great mainstream product, is.
Sorry for my rant

I think it's worth explaining some of my own feelings on it. I'm on the same page with you on privacy, I just think this is the most realistic way to achieve those goals as we have to give the market what it wants if we want to grow into a competitor to PayPal and ApplePay etc..we just make sure privacy is an option within that.