Pobierać can mean to download, to collect taxes and to draw blood and you can kind of see the connection here between the 2nd two meanings. However, if you make it reflexive to pobierać się (as per this sentence), this means to get married !?! Should only the perfective version i.e. ‘pobrać się’ refer to ‘‘to get married’’? (English translation on CM is ‘‘None of us want to get married’’).