Why is investing for both income and growth in retirement challenging?

• Many retiree's seek to achieve three reasonable goals when investing; a decent income that keeps up with inflation, capital growth, and access to their savings.  
• This is challenging, given these goals conflict with each other, and this has only been made even harder with today's low interest rates and volatile investment markets.
• Retiree's therefore seek an efficient and effective means of delivering stable income from growth assets - and a thoughtful approach to reserving can do just that.