Reading OP's current usage of the system does not really lead me to believe an upgrade is needed
Nobody, included the OP said anything about any upgrade being "needed". Truth be told, very few upgrades are really
truly "needed". In reality, with only very few exceptions, the only time an upgrade is truly
needed is when we have a new
requirement (not a desire or want) that our legacy software or hardware does not support. So for "compatibility" reasons, we
need to upgrade.
Nobody "
needs" a gaming rig! But that does not mean we don't want one.
And we are all human and humans like shiny new things. And the smarter ones like to be proactive. When we see things getting long in the tooth, we like to replace/upgrade them
before they break - perhaps even in time to capture a little resale value in them. Nobody
needs a brand new car, but just about everybody wants one and those who can afford one, typically buy one - even though we all know buying a 2 - 3 year old used car makes the most financial sense.
I think it safe to say we all would rather our computers be waiting on us rather than we waiting on our computers. Most computers slow down over time and I am NOT talking about because they get full of clutter (that's actually due to poor preventative maintenance - a user task!). Computers typically slow down over time because we demand more of them. Bad guys forcing our security apps to do more to protect us is a big reason for system slowdowns. But many of our favorite apps (especially games) are more demanding on system resources too.
We don't know when Fif23's bought his components but we do know that motherboard and CPU came out 6+ years ago. Most users, on average, replace (or perform major upgrades) every 4 - 5 years. So "Grandpa" is actually a bit behind the times!
Note, as a brand new "great" grandpa myself, I feel his pain - every time I have to pick up a tower to lug outside for cleaning.