I'm not a space scientist but it look sto me that human space travel is insanely hard and, if there's no infrastructure at the destination humans won't be able

I'm not a space scientist but it look sto me that human space travel is insanely hard and, if there's no infrastructure at the destination humans won't be able to do much... So, maybe it's too early to wish space travels ? Maybe it'd be safer to first colonize with robots, install infrastructure, make sure the travels are safe enough by sending animals or other life forms and then once ready, send humans ?