The risk of arrest is very real although the penalties are not typically that great. The top escorts enjoy people, enjoy sex, and enjoy their work. The reasons for leaving the business include relationships, finding a job, not needing the income to supplement other activities and burn out. Developing a clientele takes time. Also you will need a phone.
Pagers are out.
Cellular phones are in. Also, word of mouth clients are always the best clients. The most successful escorts entered the business through networking with other escorts. If your sexual fantasy is to be an escort then try it and then make your decision. If your objective is for quick cash then don't quit your day job.