This topic has been discussed hundreds of times. It used to be a "hot" topic but that heat has dissipated about which to use with a vast majority of people using layouts. Putting title blocks in model space is considered "old school" for a reason. The differing opinions now are on how much to put in paper space.
What it really comes down to is what works for you.
If you are producing professional drawings that have multiple scales on the same sheet of paper, using paper space is a no brainer.
If you are producing professional design drawings that are to a scale, using paper space is a no brainer.
If you are drawing pretty pictures, you are probably using the wrong program, but plotting from model space is probably for you.
etc...