Why? Simply because such deposit bonuses do not incur any fees for deposits or withdrawals. No-wager free spins incur them, so they are really not free spins at all - you are actually buying them! The truth is, one free spin cost $1 to buy, and you may not win anything from it! Sure, if you get lucky and make a nice good win, you can withdraw it immediately, without any restrictions, but how many of you have really won from them? Certainly not me!
I deposited $20 just to get 20 no-wager free spins, just for trying out sake. If I could use the spins on any game of my choice, then I would have enjoyed it very much, but no, those free spins were only for a specific game. In Playojo's case, the free spins were allocated to 'Reel Deal', by Green Valley Games, when I took them up yesterday. Honestly speaking, I don't like Green Valley Games, and 'Reel Deal' was no exception. One look at the game and I went "oh god!" Not my kind of game at all, and so, those no-wager free spins were nothing more than just a trick on me! I could have deposited at some other casino and enjoy a 200% deposit bonus instead! That would certainly have given me more fun and enjoyment than those lousy 20 free spins on Reel Deal.
Okay, to be fair to Playojo Casino, I played my deposit money on NetEnt's latest game, Finn And The Swirly Spin, and had a fairly enjoyable play on it. No win in the end, but I had some fun. And as expected of NetEnt games nowadays, the game played well in the beginning, becoming harder and harder to play as you go deeper into it, with more and more spins coming in empty. What took me over 2 hours to gain just a little bit of profit, were all lost in just a matter of few minutes later on! Sheesh!