If I will lose anyway by playing safe, why should I play safe?
That's true, I think headline inflation is massaged, and it's truly more like 5% PA, leading to losing nearly half the value of your money in 10 years, meanwhile you can get a maximum of about 2% interest in "high yield" savings accounts.
I am pretty sure both of your numbers are overstated. Inflation over the past year has been roughly 1.7% and interest rates on savings accounts tend to max out well under 1% (probably closer to .5%).
The return on things like bonds and stocks however are vastly exceeding inflation so if you invest your money in these kinds of investments (as you should if you have a long term timeframe) you will overall gain money after inflation