Fast and reliable data transmission in wireless networks is hard to achieve due to interference and fading. Interference limits spatial reuse in the network and fading leads to high error rates for transmissions. These error rates can be exponentially reduced by cooperative relaying. With this approach, neighboring nodes can help the transmission by repeating the signal via independent channels. In large wireless multi-hop networks, this poses two major problems: First, the additional transmission of relays causes additional interference. To achieve a desired outage capacity, receivers span guard zones to mitigate interference and thereby affect spatial reuse by consuming area - the so-called spatial consumption. Second, retransmission requires additional channel resources which typically reduces data rate - the so-called multiplexing loss. Without careful studies it is not obvious when these costs pay off. Therefore, I study how the additional interference due to relaying affects the network's performance in two steps: First, I analyze the spatial consumption of the cooperative transmission using geometry. Second, I combine this analysis with outage capacity expressions. With the resulting analytical framework, I show that although relays require additional space by blocking neighbors, the diversity gain compensates for interference.