Thanks for putting up your question on Just Answer.
A tooth that has an abscess presents with two options:
1. A root canal followed by a crown. An important question to be asked before you spend this money, is if there is enough good tooth material remaining that will support a crown. If the final post-root canal restoration cannot guarantee that this tooth will remain in your mouth for a minimum of 5 years, then it is better to have the tooth removed and to spend money to replace the missing tooth, either by implants or a three unit bridge.
2. Get the tooth removed. This is the cheaper option, but unfortunately the resulting missing space will cause the tooth behind it to slowly shift their positions and drift into the space. These unnatural teeth positions can cause problems of food lodgement leading to periodontal disease, and TMJ problems due to abnormal teeth interlocking.
I would personally always suggest that a patient should retain the tooth and get the root canal followed by a crown.
In your case however, given your age and the fact that it is the 2nd or 3rd molar that we are talking about, and also your statement that you would like to avoid a lot of treatment, I agree with your hygienist , you can safely get it pulled.
Hope this answers your question.Please leave a positive rating for me if this answer has helped you. I do not get credit for it otherwise.
Good Luck !