We went in to buy to let about four years ago, working on the assumption of continuing rises in house prices. As you might imagine, that plan has taken a bit of a battering! We reckoned on making next to nothing from the monthly rental income, but making our returns on capital growth in property values. We've had to completely rethink our plans, but have the fortune of having managed to secure some very low mortgage rates when we started, which are ongoing for the life of the mortgage.
We never went in to this as a short term solution, and equally we never anticipated significant rental profits. Our longer term plan was to buy a few (we bought five), then sell one or two when property prices increased and use the capital growth to pay off part of the buy to let mortgages on the others, thus increasing our profits each month.
In the current climate, we have lost capital, but are managing to make a fairly healthy profit from rental income instead. Overall, we are worse off than when we started (as in, if we had to sell, we would have made a loss, even with the rental profits).
DH is always keen to buy more, but in the current climate I am reluctant, not least because we are already heavily exposed to dips in house prices. If I had a stack of money to invest, I may still consider property on the assumption that prices will rise again. However, it is much harder to make money on the rental income these days, and there are no certainties on capital growth either, so it is a much more risky prospect than it was.