There are supposed advantages to a beam..
However typically as i see it..
Not as good as many point it out to be (on HF
Yes i get the directional thing..
Yes i get the not having to hear everyone else around you..
that just never seemed to be an issue for me..
I have talked all over the world..Nearly everywhere except Antartica.
Now if you want to talk about VHF and UHF
then that is where a beam really comes on to its own..
Only way i see a beam making a constant/continual difference .. is if ( say for 11 meters ) it is at least a 4 element (better as a 6 element) with it being 32 foot or longer ..
Otherwise my 5/8 wave ground plane will do at least as good
( as evidenced by how i have spoken all over Europe,Africa,North and Central America,the Asia's and even Australia )..
However run a beam on VHF or UHF
... Then without having to get a monster size antenna...electrically you can have a huge gain antenna and truly increase your range (hearing and talking).
i use a good 5/8 wave Ground plane ( Interceptor I-10K )
for VHF & UHF
i use both typical verticals for local and repeaters& beams for talking distance/skip (well if you want to call it skip )
Anyways...that is my 2 cents