I agree with what one poster mentioned above about helping out others who have birds - whether it be a rescue center or something similar. Although it won't really give him a good feel towards the actual 'bird psychology' that will be involved from living with one, day in and day out. As far as physical maintenance daily, they can be as little work as a dog or cat. But their emotional needs are great and day to day (if not hour to hour) interaction needed is considerable and is a huge commitment.
They have mood swings if they don't get enough sleep if the TV was on too long at night - they get mad at you if you have guests come over and you have to lock them in their cage and will sometimes hold a grudge for days. My bird has to be locked up because he steals food from guests plates off the table and flies back to his perch with it. It is pee in your pants funny, but it really is bad behavior. My bird also gets fussy if he misses his evening TV time. They like routines and don't care too much for change (especially if the change involves the owner - new puppy, baby - job - new hobby).
As for considering adoption, my current bird is a 'rehomed' bird - given to me because the lady couldn't travel with him anymore since it made him pluck. Too bad he was constant plucker for awhile before he was rehomed and developed a habit out of it. To keep him from living in some sort of 'bird rescue' place where individual attention was minimal, I chose to let him live with me, baldness and all. Thankfully he has grown some feathers back in the few years he has lived with me, but his habit is a strong one we will always have to deal with for the next 20 years or so.
Someone above mentioned expense - yes, that is a big deal, and not just on toys and food. Be ready to drop several hundred dollars for a visit if a big bird gets sick, especially if he has never been into a clinic before and has no record, tests, blood work, etc.
Now not to sound discouraging by all this, because bigger birds are AWESOME and the things they do can make for a lifetime of memories. That's just my experience and I've had alot of wonderful experiences with birds over the years -
Just some thoughts to keep in mind and different situations to think about.