The thing about keeping chickens is that they are SO easy to keep!  I got my first flock when I was 19 and about 5 months after, I went away to college.  My father - who didn't have much experience in keeping anything - looked after my hens with ease!  As long as there is available food and water, the birds pretty much go on cruise control.  
I usually checked on the birds 3-4 times a day when I was home, but that was more for my sanity than theirs.  Chickens are hardy and much more adept to caring for themselves than people get credit for.  In comparison, a dog is SO much work.  Dogs require a lot of attention and veterinary expenses.  While they are man's best friend, they are probably the closest commitment to having a kid, and you really have to plan your schedule around them (can't leave the house all day if you have a dog!). 
Read a few articles, talk to a local Backyard Chicken keeper, and have faith!  Anybody can keep chickens, and the more work you put into your coop/birds, the better off they'll be.  As of care though, they are not an animal that needs constant looking after, so you'll maintain your freedoms without worry!
Hope this helps!