It depends on your mentality which one is better
Here are some facts they are worth your time check them
Gold
Unlike paper currency, coins or other assets, gold has maintained its value throughout the ages. People see gold as a way to pass on and preserve their wealth from one generation to the next.
The price of gold remains stables comparatively when price of other currencies falls
its price tends to rise when the cost of living increases.
As we are moving towards new century the cost of living is increasing exponentially
It's a crisis commodity you can sell it instantly for cash that is the reason Indians have lot's of gold in Thier house holds
Demand for gold has also grown among investors. Many are beginning to see commodities, particularly gold, as an investment class into which funds should be allocated
gold has historically had a negative correlation to stocks and other financial instruments. Recent history bears this out:
The 1970s was great for gold, but terrible for stocks.
The 1980s and 1990s were wonderful for stocks, but horrible for gold.
2008 saw stocks drop substantially as consumers migrated to gold.
Gold should be an important part of a diversified investment portfolio because its price increases in response to events that cause the value of paper investments, such as stocks and bonds, to decline. Although the price of gold can be volatile in the short term
 
Bitcoin

the value of bitcoin is not strongly correlated neither with the stock market nor national currencies.
Bitcoin may in fact benefit from the collapse of the traditional economy which means that it is smart to diversify some funds into bitcoin.
the daily amount of new bitcoins created will halve from 3 600 bitcoins to 1 800 bitcoins.
This is a fixed rule set in the Bitcoin protocol since the beginning and it activates approximately every 4 years.
As a currency bitcoin is very different to national currencies such as the dollar or the euro.
Bitcoins can’t be created out of nothing and the amount of bitcoins is predetermined and strictly regulated by the protocol itself. The maximum amount bitcoins is 21 million and there will simply be no more
Bitcoin is digital cash and any attempts to remove actual cash will increase the demand of bitcoin
The usage of Bitcoin is increasing rapidly all over the world
The new uses of bitcoin are constantly increasing

These are some facts read them both and then take your decision

From an investment point of view, bitcoin is more about gold than it is about other currencies. That's because as an asset, bitcoin and gold have a lot in common. Both are limited to supply, both have functions to use, and many believe that, despite their large price fluctuations, they remain a good store of value. Compared to gold and currency investment returns in the past five years, the currency's performance is far better than the so-called precious metals, gold year loss than 6%, the currency of the annualized rate of return is 155%. These rich returns show that bitcoin has excited investors about the prospect of putting money into such a new asset class.

Compared with the gold standard, the value of the currency rising and proven performance, investors can be used to measure the investment of the world's leading digital currency future opportunity and risk indicators.

In talking of investments ofcourse Bitcoin is better not only to gold but to any other legal investments and businesses but in talking of assurance, i say Bitcoin will not guarantee you the earnings because of the price volatility and risk because the price is unpredictable. In addition Bitcoin cannot be used in time catastrophes like wars and the lost of internet unlike gold which is accepted by everyone.

From an investment point of view, bitcoin is more about gold than it is about other currencies. That's because as an asset, bitcoin and gold have a lot in common. Both are limited to supply, both have functions to use, and many believe that, despite their large price fluctuations, they remain a good store of value. Compared to gold and currency investment returns in the past five years, the currency's performance is far better than the so-called precious metals, gold year loss than 6%, the currency of the annualized rate of return is 155%. These rich returns show that bitcoin has excited investors about the prospect of putting money into such a new asset class.

Compared with the gold standard, the value of the currency rising and proven performance, investors can be used to measure the investment of the world's leading digital currency future opportunity and risk indicators.

Bitcoin and gold are very similar to each other, since they both have limited emissions. However, bitcoin is a more mathematical and regulated thing, unlike gold, which is mined and mined, without thinking about the consequences and that it is an exhaustible resource. Since Bitcoin is, in fact, mathematics, no one can influence it, because mathematics can not be changed. That's why bitcoin is more independent and self-regulating unlike gold.