I'm really sorry (and accept down-vote storm) to disappoint you but you won't be young again and burning midnight oil may remind old days and bring excitement, but in the end it will harm your health.
Learning like crazy, late night hacking and other attributes of fresh engineers is sometimes a necessity to build a career, knowledge base, equity to comfortably start a family. Some people enjoy it and many hate, but most of us did it at some point.
I wouldn't oppose it if it wasn't harmful for the industry. What all those engineers who are excited again would think of a startup that stole all free land, building material and doubled housing? I bet all youngsters would be excited to have their own place for $20 monthly mortgage payment, telling everyone who has paid most of their salary over last 30 years how energizing is feeling you don't need to work for your house your whole life and ignoring equity crash for those folks.