I definitely went through a phase of always reading the last sentence on the last page when I was younger. It was fun to see the final moment even though I was far from reaching it. Nowadays if I do read anything on the final pages it’s by accident when I’m flicking through to see how many pages/chapters the book has.
When Harry Potter and the Deathly Hallows was released, my copy arrived while I was at work at my Saturday job. My mum, who had never read a Harry Potter book and had only seen the first two films, decided to read the last few chapters just so she knew how it ended before I did. She didn’t spoil anything for me but it was funny how she just had to know the ending even though she didn’t have any context for the vast majority of characters mentioned.