You guys are crazy lol. I took a ride for the first time on an ebike last night while I wait for mine to arrive in January. My brother in-law just got a Super73 RX. I hit 28mph and said that's plenty fast. Granted I only took it around the block, and it was at night, and I wasn't wearing a helmet (I know but it was just a quick spin around a quiet neighborhood block). Anyways I thought going in to this whole purchase that I wanted to do 35-40mph. Last night changed my mind. Im cool at 28mph lol. Weird thing is when I was young I spent plenty of time on a Honda CBR1000RR and never felt like I was going too fast.
Don't get me wrong this is absolutely true. Whenever I'm in the upper 20s I feel like it's perfect I'm totally happy with that speed. That's why I still have my rear hub with 750w motor (juiced Ripcurrent S). It does feel sketchy going upper 30s but not going to lie it's still a blast going downhill crazy fast sometimes but have to be careful. I always wear my helmet and only do it on familiar back roads and never at night etc. I am going to get a go pro soon so I can do some recording.