No. It isnt worth downloading.

HotS is very very grindy. The gold gain is too low even till you'll spend a month to grind daily for a free hero. Unless you are content to stick with the weekly free heroes rotation or willing to spend money on the game, you can very much skip this game.

This isn't Hearthstone where it is still the best TCG in the market where you can stomach the grind that isnt too bad to begin with. HotS's grind is awful while there are so many good MOBAs in the market, why play a mediocre game like HotS with its poor business model. The gameplay is good like what you expect from a blizzard game but the grind and the absurd pricing at this time and age pretty much ruined the game. League got away with high pricing because it was the first. HotS is just too late to the market when you have 2 massive MOBAs dominating the market.

Hi Tarva, might be abit late to reply. but its definitely worth a download. At first when i first try the game, i quit after 1 day. but after going back and giving it a 2nd chance, the game gets better when you get to team with players  whom you already know instead of just queing alone and playing at a higher tier. This is a very non-toxic game compared to dota since everyone shares the creep experience and being at the same Level. My interest level from 1 out of 10 jumped into 8/10 after playing for sometime, and now its at max im hooked to this game and its really enjoyable to be able to play with friends. Each heroes provide different kind of experience, especially if you are a blizzard fan, u'll be able to play your favourite character with their original design.

The F2P model isnt that bad in this game, alot of players are actually buying the heroes/skins/bundles. they are making money, a company needs to make profit to survive its just supply and demand. and i'll say i dont mind paying for this game. Gold is grindy but im sure they will improve it since there are many complains bout it.
its much more fast paced, a game can just end in less than 8 mins. i really enjoy these short yet sometime long game play depending on how skilled and the strategies that your team adopt.

Im a long time dota/LoL players and i will never go back to them after trying HOTS out for sometime, dota is just too slow paced for me now i just enjoy a getting into a game, brawling in a fast paced environment instead of just farming .

Also about the bs opinions about this game not needing any skill, do you seriously believe that this game doesnt need any skill? Lol. sometimes i just laugh off reading these comments.

Anyways, Enjoy! Definitely worth a try!