I am not sure what you're doing different, but the exact opposite is true for me. I don't reboot my computer unless some update from work forces me to. I run a bunch of programs all the time. Here is my laptop currently and this isn't even the highest, I've gone much longer than this on both my work and personal laptops. Both are regularly connected/disconnected to big displays too.

$ uptime 13:41 up 38 days, 17:01, 6 users, load averages: 2.21 2.01 2.01