In analytical studies of multi-hop wireless networks, the spatial distribution of transmitters is typically modeled using a homogeneous Poisson point process. In this report, we show why such a modeling is inaccurate and leads to an inappropriate interference distribution in the case of CSMA/CA networks. We then study a more realistic model, the Matèrn point process, which still reveals some unexpected flaws such as an under-estimation of the transmitters density. To get round these limitations, we propose the use of an alternate model, referred to as the \emph{Simple Sequential Inhibition} (SSI) point process, which we assert being a valuable and more appropriate model for CSMA/CA networks. We present some analytical results on the Matèrn and the SSI model and study by simulation the interference distribution resulting from the different point processes.