Whatever situation you’re in, there are times we find it necessary to avoid making certain important calls. Instead, you may prefer leaving a voicemail. However, if you simply call the person’s phone number, they might pick up and not give you the chance to leave a voicemail.
When you’re looking for a job, a good rule of thumb is to answer your phone as often as you can. You never know when a recruiter might be calling to set up an in-person meeting, or conduct a phone interview.

Thanks for calling Dial-A-Shrink. I can’t come to the phone right now, so after the tone, please leave your name and number, then talk briefly about your childhood and tell me what comes to mind when you hear the following words: orange… mother… unicorn… penis. I’ll get back to you with my diagnosis as soon as possible.
Recording voicemail greetings for your business or personal life requires a separate list of priorities, because they are being used for two distinct purposes and will be heard by two very different types of callers. I have a friend with two cell phones - one for work, and one for personal calls - and if you call both lines, you would never know it's the same person.