it will depend on the financial budget that we have set. If the minimum deposit exceeds the budget, we don't need to deposit it just to get the bonus, but only deposit enough. But some people want to try to deposit more to get that bonus because they see the bonus as very tempting, so they decide to deposit more to get it. Maybe we can try it occasionally if we want to try to get a bigger bonus. But it is not worth doing if our gambling budget is limited.
I think it's a risk that people shouldn't take about gambling. If you have a limit about your deposits, keep that in and do not go for the extra bonus, in the end you will lose that too so you shouldn't be really caring about the end result. I am not saying that it's bad, but it is certainly not a good way of making money neither, it's going to end up being much worse for you if you deposit more than you should and end up losing it.
I feel like the best thing to do would be staying away from it and just deposit your normal amount and gamble the way you always do and if you end up losing at least it was an amount you were willing to lose to begin with and that's it.