Should I go with modular wardrobes or carpenter made

We have doubts on modular or factory finish wardrobes or kitchen. If we go with modular ones wood wil have machine cut of 90° and if wall where it is installed is uneven then how that gap between wall and wood will be taken care. Heard that gap will be filled with silicon gel, is it ok considering look and durability, it wont go off and make way for coakroaches? We liked the finish of modular ones but concerned about above. Please clarify, we need info on this to decide to go with factory made or carpentary made. Thanks