What if I don't want a remote desktop though? 99% of the time I only want a the remote application I am interested in to seamlessly display on my screen, why do

What if I don't want a remote desktop though? 99% of the time I only want a the remote application I am interested in to seamlessly display on my screen, why do I have to bring along a full desktop? Seems like such a fundamental use case that should be made simple but is ignored (or made very difficult) by modern systems.