I don't think their songs/fanbase will stand the test of time, not enough to warrant a reunion anyway. Hear me out.. with other pop boybands there's usually 1 or 2 members who will have a successful career after the band is over. For 1d all 5 have their own solo careers, and it's caused a division within their original fanbase. An obvious example is harry fans v Louis fans. They argue about which guy is flopping, insult the guys looks etc to defend their favourite. So it goes from supporting all 5 to hating 4 and liking 1
Also the guys don't hang out as friends now and some of them haven't spoken to Zayn since he left, so I can't see it happening. And I can't see Harry and Louis wanting to share a stage again. And who knows what comments they'll all make in the future like Liam did in the Logan Paul podcast