The mores relating to sexual activity are rapidly changing in the direction of liberalization in the US-- 10 years ago being gay wasn&#x27;t popularly acceptable. On other fronts (polyamory and the galaxy of other sexual options) are rapidly becoming more acceptably and may be mainstream in another 5 or 10 years.<p>Necrophilia, zoophilia and pedophilia aren&#x27;t on the radar for acceptance yet-- possibly these will come after poly-acceptance (so maybe in the 2030s? hard to say) but I wouldn&#x27;t be too surprised if they end up sticking around, considering that beyond their reputations those philias are actually harmful.