Why would owners of small businesses not be inclined to use the net present value or internal

Question:

Why would owners of small businesses not be inclined to use the or measurements?

Net Present Value
What is NPV? The net present value is an important tool for capital budgeting decision to assess that an investment in a project is worthwhile or not? The net present value of a project is calculated before taking up the investment decision at... Internal Rate of Return
Internal Rate of Return of IRR is a capital budgeting tool that is used to assess the viability of an investment opportunity. IRR is the true rate of return that a project is capable of generating. It is a metric that tells you about the investment...