I disagree. The ATLAS detector took 3,000 physicists well over a decade to design, build and test and that's before we even consider the similar effort which went into the LHC accelerator and the other large, multipurpose experiment, CMS. The challenges in other fields are different to those biomedical science but that does not in any way mean that it is easier.
Every bit of important, interesting research, regardless of field, has difficult challenges to overcome because if it did not someone would already have done it. You cannot just throw up your hands, say it is hard and then lower your standards until it becomes easy because at that point it is questionable whether the research you are doing has any value at all and, in some cases, even brings into question whether it actually counts as scientific research.