What other anons said. You have to be a complete mouthbreathing trog to not understand Hitler's motivation. He wasn't rejected from art school by jewish professors thus setting off a vendetta ending in the holohoax. That's an urban legend that sprung up from wartime propaganda. He was a front line soldier during WW1 who witnessed the destruction of his country during the Treaty of Versailles and hated it.
WW2 was directly caused by WW1. Following WW1, everything that happened was blamed on germany even though that war was started by a serbian assassin killing an austria-hungarian duke. As punishment for defending their allies, germany lost huge amounts of land which went to the creation of the new nation of austria, got absorbed by poland, etc. In addition, the german military got disarmed, and they had to pay war reparations which today value at 442 billion dollars. To make it worse, france moved in and occupied the ruhr valley, which is basically germany's silicon valley, so that the germans couldnt use their industrial equipment until the reparations were paid, vasically ensuring they never would be.
All this is to say that germany was a dying nation on the verge of total collapse, and Hitler wanted nothing more than to revitalize the economy, reclaimed the lost land where millions of germans lived but were forbidden from rejoining germany, and to get rid of the many human rights violations which had popped up in berlin (child prostitution, human zoos). Hitler succeeded, by the way. From 1933 to 1939 germany was basically the greatest country in europe. He completely turned it around and was even made time man of the year for doing so. So that's why anons on this board and elsewhere love him so much. He is a model man who loves his people and defied the impossible to save them from total destruction.
If you'd like to know more, watch this quick six hour documentary:
https://www.bitchute.com/video/mZpeJkSNjcA3/ via bitslide