In analytical studies of multi-hop wireless networks, the spatial distribution of transmitters is typically modeled using a homogeneous Poisson point process. In this article, we show how such a modeling is inaccurate and leads to an inappropriate interference distribution for 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 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 SSI models and we conjecture and show by simulation that, with both models, the interference distribution converges towards a Normal distribution.