What’s an era of time you would love to visit?

don't wish to even waste a little time that comes from future to think about it.. as I find it absurd.. but I am focussing on bringing the era back in future ... and I wish the era of no marriages (esp. monogamy) where people are free to indulge in fun & frolic without ulterior motives or conspiring like how it is now, where all relationships are man-made, which nature would have never wanted to create..