Finishing your Private like others have suggested would be a good way to gauge if you think you'd be into it long term.
But I'll say this. I was a starry eyed high school kid who wanted to fly 747's and be like DiCaprio in Catch Me if You Can. I lived and breathed aviation. Any article or publication or book I could get my hands on about it I read. Fast forward almost a decade... I'm in the regionals like so many others here and just grinding along on first year pay. I'd read a lot of stories so it was expected, but the regionals are far from glamorous. And now I've met a nice girl and want to settle down, and suddenly a stable desk job where I could be home every night seems a little more attractive. And with this career, you can expect to move around at least a few times unless you want to endure the hell that is commuting. So then you worry about your significant other finding their dream job in whatever city you're in when suddenly your airline notifies you they're closing that base and now you have to fly several states away. So do you commute or ask your S.O. to leave their dream job?
These are some concerns I've had with the job so far, but I'm very fortunate compared to many regional pilots because I live in base and was able to do my flight training very cheaply (little debt). So imagine the anxieties of worse off pilots. I've met guys on reserve for years (you sit around til another pilot calls in sick and cover for him) in bases across the country from where they lived, only seeing their girlfriend one day a month and hardly even getting home. Serious burnout. I have respect for their perseverance but don't envy them at all.
So proceed with caution. This industry is volatile, job security seems like nil sometimes (9/11, bankruptcies, furloughs, the possibility of single pilot cockpits in a decade or two), you might lose your medical, and management is always in contention with you.
There are upsides to the job, but it's important to hear the bad things before committing to it in a big way.