it could be, if you are reckless maybe you will succeed but it can also fail, now this failure is what many people make loans as bitcoin investments prohibited. because it will disrupt emotional stability in decisions so that when it fails there is a lot of stress due to loss of assets and getting into debt. the best thing is to keep using free money in investing because that way we are never afraid to lose or even be grateful if we make a profit.
Not only the emotional stability but also your mental state because it's connected it's like a chain that it could also affect the physical health of one person when in case they be in debt. Never ever put at stake the money the you cannot afford to lose in a risky situation since it's volatile. So when you lose some funds and too stressed to think about it, you might forget to eat due to stress, not having enough sleep and etc. With these effect already saying the possible effect when you use loan for investing in Bitcoin.