It's no more or less ethically wrong than putting the money in a bank account. Money in a bank will be lent as capital investment, for which service the capitalist will pay interest to the bank. Maybe that individual capitalist will fail. Maybe they succeed beyond their wildest dreams. On average they will succeed at least well enough to cover the interest. Some of that interest will end up in your account.
There is no individual escape from capitalism, except for ways that leave you isolated and politically impotent.
A socialist alternative might be to keep your savings in a socialist credit union that only lends to worker co-ops. I do not think such a thing exists in the United States, at least. (There are credit unions that make most of their money on personal loans/mortgages/credit cards, though. Up to you if that makes a meaningful difference.)
It's no more or less ethically wrong than putting the money in a bank account. Money in a bank will be lent as capital investment, for which service the capitalist will pay interest to the bank. Maybe that individual capitalist will fail. Maybe they succeed beyond their wildest dreams. On average they will succeed at least well enough to cover the interest. Some of that interest will end up in your account.
There is no individual escape from capitalism, except for ways that leave you isolated and politically impotent.
A socialist alternative might be to keep your savings in a socialist credit union that only lends to worker co-ops. I do not think such a thing exists in the United States, at least. (There are credit unions that make most of their money on personal loans/mortgages/credit cards, though. Up to you if that makes a meaningful difference.)