Hey guys. I know there have been WoW threads in the past. But I don't see any recent ones. So I'm going to bring it back

Backstory
Okay. I've had a long history with WoW. I started playing since I was in 6th grade. I think? I remember talking to other kids who played too. Back then I was Alliance and I had a human paladin. Then when Burning Crusade came out I switched to Horde and became a Blood elf mage. I don't remember the highest level character I've ever had but I'm sure it was 60+ maybe. I stopped playing because my dad didn't want to pay for my account anymore. And I guess I was focusing more on school stuff.

~Fast forward to now~
Since it's summer vacation for me, I've gotten really bored and don't have many games to play. I just know that I enjoyed playing WoW. It's been years since the last time I've had an account. So I wanted to see the new changes and things.

Recently, there is an option to have a Starter account where you can level your character to 20 without a time limit. I recently downloaded it, and being a former WoW player, it's fairly easy for me to level a character to 20.
I actually have 2 lvl 20s now in a matter of 2 days (i think). I experimented with Druid class, which I've never played with before. I love it.

What should I do?
So now I'm starting to get addicted to the game again and I don't know if I should upgrade. I don't really have money to pay for the upgrade or pay a monthly subscription. So I guess I was wondering if anyone here still plays WoW. And what you guys like about it or what you don't like about it. And all the changes that have happened. I'm interested to know. Maybe down the line I'll cave in and pay the monthly. Or unsub, resub when I want to play on those months when I get bored.