I think the fear of rising interest rates is severly overblown here. The current rates are not even near a historical average.
Just the past week the Fed voiced that continuing economic growth would be slow, and the markets tanked. I do not think the Fed is realistically anywhere near to raising rates.
When they do, it really just effects the profit margins on their leverage and rates of return. But really, if they raise rates, then the economy is better, and the rate of return also most likely has improved. This all assumes that the Fed doesn't act too early and send us back into a recession.