Why have DI out placed before effects loop?

[ThisBass]

Unfortunately, my amp has no effects loop. When I bought it I was using no effects, so it didn’t matter to me at that time. In the future I will be looking for the loop. One thing I have noticed is that not all DI out’s are after the loop, why would this decision be made? Is it that the thinking is that players who use effects and would run them to the board will likely use a separate DI?

There are tons of DI-boxes offered (for cheap money) that you can put anywhere you want into your signal chain.