Sadly, as you do more repairs, it will make sense.
Parts and labor can often exceed the price of a replacement.
You'll see this in cars, laptops and just about everything. The reason TVs have mostly become irreparable is not that they can't be repaired but the cost to repair can exceed or be too close to the cost to replace.
Some folk think that they are getting ripped off but in most cases, if the part is something like the display panel, the cost is almost always too close to the replacement cost.
There's more about this but this is a small text box so I'll stop here.