Well, I just want to add my voice to those asking for a save function. I just started playing today and I have already had to restart a few times and it gets frustrating. For me, it's mostly because I feel like I just wasted all the time it took to get to that point where I died. Perhaps it could be an option? Those who don't want to save can choose not to save, those who want to save could have that option. I was a programmer for years, I can't believe it would be that hard.
I hope the developers read these posts and consider this.
Thank you