I completely disagree with recommending exposing a port to someone who's asking this very question about the relative risks.
If they lack the expertise to understand the risk differences, then they very much lack the expertise to securely expose a port.
Regardless of ADHD, guilt is often not useful, and a choice we make.
I highly recommend reading Wayne Dyer's "You're Erroneous Zones" - he explains how to use Cognitive Behavioural Therapy techniques to reframe things like guilt.