What am I not understanding?

I read the post about choosing plans, but I feel like I'm not understanding something pretty fundamental. I have two plans offered to me through work, and on the surface it looks to me like the HDHP is the no-brainer.

The biweekly payroll cost for the HDPD is $47.04

The biweekly payroll cost for the PPO is $95.28

Why would anyone chose the PPO? I don't get it. The HDHP has: Lower payroll contribution, HSA employer contribution (and HSA eligibility in general), and a lower out of pocket maximum. I see that the PPO has a lower deductible, but I've generally taken options for "worst case scenarios" and for that max OOP is normally what I see as the most important line item.

Can someone please explain to me what I may be missing? Who would ever pick the PPO plan?

I did attach a link to the plan tables for reference.

Thanks to anyone with insight.