Why do some progs install to /home by default? e.g Wine, Amule etc...

[Moltke]

Moi again.

OK, so lots things are going right with my new LL installation -  n°5 in this last week ...but some things are not so great. I downloaded and installed Amule with help from [member=7109]Moltke[/member] and it runs, jumps, does back flips and is generally doing exactly what it's supposed to BUT I have just discovered that it's installed to /home and that Wine and MT4 also want to join the party.

When I set up the partitions, I was under the impression that as I was using a separate drive to store all my documents and data the /home directory was almost redundant... so I deliberately made the Root directory as big as I could (0n my 30gb mSATA) at 23gb and thought that as I was never going to use it, just 4gb seemed more than enough for /home.  Now I find that half of that has gone and that I'll probably be  running out of room quite soon whilst Root has plenty.

Obviously, I can just make /home bigger and Root smaller but I don't get why this is happening and would rather have all my programmes in one place. Is this unavoidable?...or am I just being dense?

Don't know about amule cause have never used it but wine's not just another regular program, I think it does that for security reasons, after all uses some foreign microsoft Libraries not native on Linux and even creates its own "virtual drive" which may somehow corrupt, mess with or damage  the sysytem if installed with the rest, i.e in /usr/lib instead of /home, snaps and flatpacks do this as well, of course, this is just me speculating but I think it makes sense, doesn't it? Read here for a better understanding  https://en.wikipedia.org/wiki/Wine_(software)  and here https://wiki.winehq.org/FAQ