You get an annual doctor visit for free with any insurance plan. There is no deductible or copay. There are other categories that are covered with no deductible. My wife had a $13,000 IUD insertion under anesthesia at a hospital due to complications, and this cost her $0 with insurance, without having met her deductible, since reproductive health is covered with no out of pocket cost under all ACA plans.
I'm on healthcare.gov looking at Georgia's plans this year for someone with $45K of income. You have options starting at $129/month. Many of these sub-$200 plans get you doctors visits for $40-60, prescription drugs for under $25 each, mental health treatment for under $60 per visit. This is all without hitting your deductible at all, they're day 1 prices.
If you paid the cash prices for many of these doctors, specialists, therapists, they'd be many times higher than the insurance negotiated costs. Look under the "covered costs" estimates for things like mental health treatment, diabetes maintenance, broken bone treatment, etc and you'll see that the estimated annual cost for the insured is often half or less the plan's deductible -- which tells you that hitting the deductible is not when the savings start. I don't think my wife or I have ever hit our out-of-pocket maximums in a year, yet the insurance has saved us more than it's cost in most years.
You're going to start interacting with the healthcare system a lot more than you have in your 20s once you're in your 30s. We all do at that age. And if you have even the worst ACA plan, you'll start to understand what it's doing for you regardless of the deductible.