[Warning: Rambling tangent ahead - very opinionated]

Why? It's not a multiplayer game, you don't need to participate in the microtransactions, and it certainly isn't necessary as Deus Ex is certainly not a "pay-to-win" type game.

The packs are there, in my opinion, for two reasons:

A) To make a subtle statement about how screwed up the microtransaction system is; and

B) To provide the option for players who do want to buy stuff because they can afford to

If you don't like it, don't use it. As long as it isn't getting shoved in your face in-game (and from my first few hours in the game, it hasn't been mentioned once), then there's no problem with it simply existing.

Personally I see no problem with microtransactions provided they're not mandatory in order to succeed at the game, which so far (in games I play/have played) it hasn't been. Even if they do provide an in-game benefit, it's up to us as the player base to decide whether or not we want to use it.

Boycotting an entire game just because of one minuscule feature won't prevent that feature from being implemented in other games in the future, it'll only end up preventing that studio from making games all together (provided that boycotting is done on a massive scale). So far I've found the content of games with microtransactions to overall be really good. By which I mean, the more renowned titles like Grand Theft Auto and Deus Ex, not the mobile games like Farmville or whatever.

If the core content of a game is good, or even adequately decent, and the microtransactions aren't required to have fun, then there's no problem in them being there in the first place. They're an additional avenue for the business to make money (how dare a business try to make money!) and provide a means for people to potentially have more fun if they can afford throwing down the money.

Honestly, I do partake in microtransactions. In Grand Theft Auto V, because I can, I spent $100 to get a boatload of cash so I could get things I otherwise didn't feel like working to get. You know, an attack helicopter, some fast cars, whatever. It allowed me to have some good fun, so I'm cool with it. I'm not the type to fly around and randomly kill people all the time, I just like to feel cool.

I'm not fighting for microtransactions, I'm not saying "Oh, they're the best thing ever", but if they're going to be there- why not use them since I can afford to? I'm an adult, I earn a decently livable wage, I'll do what I want with my money.

[End tangent - awaiting truckloads of downvotes]

Edit: Just learned it does have multiplayer. Shot myself in the foot there; apologies. :)