@fivetonsflax The one thing they do point out as the "negative side effect" is the "what if I had gotten this sooner?" thoughts. The feeling of suddenly having the 100 radio channels that have been playing in the background all the time drastically reduced, can make you feel a bit down when you think "how would life have been if I got this sooner".
It can be worth preparing for, it did not hit me much but others get that a bit harder.
But compared to "I'm hitting a wall, I have less and less energy as I get older, and my coping mechanism depends on me having energy, how am I ever going to manage this much longer?" mindset, I'd say the latter is a lot more likely to ruin your life.