No.
I was born overseas. My parents emigrated due to persecution and came with very little financially but they were professionals. Their parents died and they had no inheritance.
There is a large age gap between us siblings as my parents would consider having another child until they knew they could provide a good life for the one(s) they already had.
They put the education of my siblings first and foremost - not private education (they didn’t have the money at the time) but we went to grammar school.
The directed us into degrees that would lead into professions that were secure - no non vocational degrees/clear career path (history with the intention of doing law would have been fine).
My DH and his parents are also immigrants. They lived hand to mouth, working 6 days a week etc, as the squirreled away funds to send him to a local ok-ish private secondary. Those in his class that went to the local state have been struggling throughout out their adult lives. No siblings.
First in his generation to go to university.
We both had an inherent drive. Our parents never had to ask us to do homework, revise etc. We just did it.
We played hard and worked hard during our degrees. Did post graduate qualifications whilst working. Saved money.
The rise in salary was initially slow but then it accelerated when we were in a position to take on more work and do it efficiently.
We both now work more than full-time (60-ish houses week), each earning around £250k each.
We have a large mortgage but it is well within our means.
We have two children in private school and parents contribute to their fees, now that they have much more disposable income.
They can see that we both have and continue to work hard and do the best we can for our DC. If we were profligate then they would not be supporting us in this way.
They also have money to cover care fees so they won’t be a “burden” (horrible term and I don’t mean it in this sense) on the state in this way.
So, no, I don’t feel any guilt.