My way of explaining it is that LOTRO is all about the journey, not the destination. Unlike other MMO's that force you to grind away to finish off a level after doing the quests, you will find you will outlevel most areas before you run out of quests. Unless you really want to go back and be one of many LOTRO completionists who want to finish off every quest and every deed, once you reach end game, you can start a second character just to do those areas/quests you skipped with your first one.
On occasion, you will find something that requires a group, but most of those can be skipped since it was put in there to keep end gamers busy between expansions. Finding a Kin will help with those, or just ask for help in GLFF and hope some strangers join in to help you. The lack of open world PvP means that helping someone does not mean you are aiding someone who may try to kill you tomorrow. Once open tapping was introduced, you did not even have to worry about nerfing someones drops or XP by helping with a mob that appears to be bothering them.
Later on, when you reach endgame, feel free to try some serious raids and instances even though they are not required.
Sapience is OK, but I liked my fierce Armored Warrior Chicken image more as a signature. Alts are RunsWith Scissors, Brokkers Anvil, ButterWort Bingor O'Crosby