I can't say that my first experiences gave me good or bad impressions. But later on, when I was able to shadow (then assist) in a clinic where the dentists had a passion for dentistry and loved to teach what they were doing, I LOVED coming to the office every day 7 am to 4 pm 5 days per week for over a year as a volunteer. They made it fun and I learned so much every day. It made starting dental school great because I had a fire in my gut that was uncontrollable.
So, hopefuly, you are able to find a dentist or group of dentists that make you want to learn.