A third of the nation's financial advisors claim it's harder to keep clients than it was five years ago. On top of that, 75 percent of these advisors say those with less than $100,000 to invest are the most difficult ones to retain.If you're a CPA and/or financial advisor, you may be experiencing much of this in today's marketplace. Why do customers leave?It all boils down to opinions from others. Clients have high expectations, and are greatly influenced by what they hear, rather than by experience. Expectations, too, have become less realistic.