To study abroad brought me a lot of memorable experiences

[Ellieisrare]

Is it O.K to use 'to infinitive' as a subject for a past tense verb?

As far as I learned, a to-infinitive can be used as the subject in a sentence. Then can I use it like this : To study abroad brought me a lot of memorable experiences?
I don't know why but, it sounds a little awkward to me. Do I have to use gerund only? Or, can I use to-infinitive?

 

[emsr2d2]

Is it OK (don't put a full stop between the letters) to use the 'to infinitive' as a subject for a past tense verb?

As far as I learned know, a 'to-infinitive' can be used as the subject in a sentence. Then Can I use it like this?

To study abroad brought me a lot of memorable experiences.

I don't know why but no comma here it sounds a little awkward to me. Do I have to use the gerund only? or no comma here can I use the 'to-infinitive'?

It sounds awkward because it's wrong. When talking about the past, use the gerund.

Studying abroad gave me a lot of memorable experiences.

You can use the "to-infinitive" in a hypothetical.

To study abroad would be amazing.

(Note that "Studying abroad would be amazing" is also grammatical and more common.)