they're not random letters at all, for one thing, services are generally pretty straightforwardly named
Right, they're acronyms/abbreviations. But to a user who doesn't know what the acronym/abbreviation stands for, "lltdsvc" or "ktmrm" may as well be random letters.
but if you've been using your computer for any longer than a month and can't recognise what services should and should be running, there is an issue
Then go through your entire service list and say what each one is, without Googling any, because you can't.
We're not talking about installed programs here. Yes, that you should be able to go through and recognize most installed things, because you should know everything you've installed. Too many people just install things without reading what they're doing and get bogged down with toolbars and other various junk software.
But services are different. They're often a core part of the software they were installed with, yet there's no indication of what software installed it. A ton come bundled as part of windows (not all of which are even enabled), and a lot of them aren't even clearly named. And a lot of them are things you can't expect people to know: low level OS stuff, hardware, networking stuff, etc. It's not just as simple as "You installed this, you should know what it is" like it is with installed programs
To be fair, there is a user-friendly name for the services as well.
Not all of them have one
"WebClient" is a default windows service. It comes with the lovely description of "WebClient." The name kind of says what it is, but there's still a lot of ambiguity as to what
exactly it does.
And even the ones that do have a name don't mean much in many cases. "Group Policy Client" doesn't mean much to someone who's not familiar with Windows Server. "IKE and AuthIP IPSec Keying Modules" doesn't mean much to someone not familiar with authentication protocols. "Microsoft .NET Framework NGEN" doesn't mean much to someone not familiar with .NET development
Having someone know exactly what every service is is just not going to happen
