I am no longer cut out for pets...

Per an earlier post last year we lost our dog and he was our only pet left.  I grew up loving cats and animals.  I had rabbits, cats, and mice as pets growing up and at times was convinced I wanted to be a vet.  I am known by my husband as animal whisperer because often times stray animals seem to find me knowing I will help them.  But that bit me in the butt a couple years ago and I no longer am open to helping strays.  A couple years ago I took in a dog that was lost and it ended up attacking my dog and we had to have his ear repaired.  I took the dog to a no kill shelter.  When we lived in Atlanta I took 6 stray cats to a no kill shelter.  But somehow having 4 kids and a busy life I have been turned away from animals.  Our dog that died was diabetic and I was giving him two insulin shots a day so I wouldn't say I haven't done my share with pets.  But our oldest son has been begging for a hamster for a couple years.  This summer he bought a cage and supplies with his own money at a garage sale so we agreed to get the hamster for him.  We've had this hamster for 2 months and now there is something wrong with it.  My caring nature can't stand to have this animal upstairs in pain or sick so now I'm torn on what do I do about this rodent.  He is itching and has bald spots on him.  Obviously something is going on but we can't take him to a vet.  Simply NOT in the BUDGET!  So we will run by the pet store today to see if they can give any guidance and hopefully not spend a fortune on possible cures.  No more pets for me!!  Call me mean or what you want but I know my limitations and my ability to care for an animal right now and I don't have it in me.  I have never been more sure about anything.... I can't care for an animal right now in my life.  It may change later... it may not.  We'll have to wait and see.