Kinda feels weird going back in time after finishing the game

Just finished the main storage today and had an amazing ending and all, rode off with the aldecados and panam everything amazing and I actually assumed you'd get to play after and do the missions you had left. But no, didn't like how they undid everything that happened and went back to before the last mission. Feels kinda sad that the somewhat happy ending was just unexisted and the progress gone. I'm playing the rogue and johnny quest now even though Johnny's already gone and smasher's also gone so yeah.. thought it'd be like spiderman or something. still amazing game though and will continue playing what I hadn't done in terms of missions and stuff 😅