I played beta, thought it was crap and boring, I refused to buy for a long time and mocked everyone I knew who tried it... During a PSN sale around xmas, I bought it and the expansion pass as a bundle, and never played until 2 weeks ago...
Playing solo isn't really that fun, there is very little content in the game, if you have friends, then thats where the fun starts..
You will be running the same strikes / missions on hard mode over and over and over again, grinding to get vangard marks the get some gear..Its boring, but if your with friends who can have a laugh and do stupid stuff for lulz then you will have a blast, as I am doing ATM.
Now you have gear, you can start doing the same raids... over and over and over again, until you have better gear, and once you have that better gear, there is only 2 options for end game... Grind the same raid over and over again, or just go pvp lol
Honestly, if you have a set of friends ( 1 - 2 ) who will be playing same time as you, this game becomes really fun, but other than that its really boring playing on your own...
And don't get me started on raids, there is no match making, so you will either have to have 5 other friends playing, or go to forums and arrange a clan / party to do them...
all in all, don't bother if your planning on solo play, if you group play then it's really fun! not to much content ATM, but there is a big expansion with new "planet" coming out later this year.