Life experience with high TC but (relatively) lower salary?

TLDR: looking for personal experiences/opinions on living with significant monthly cash burn (e.g. -$15k/month), but high YE bonuses.

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Live in a VHCOL, married, early 30’s, no kids yet but likely in next 2-3 years.

Base salary is ~$250k (~$165k post-tax) but Total Comp is typically $1-3m/yr. Bonuses are very volatile (and uncertain) but have had ~3 years in this ballpark.

We spend around ~$200k/yr while renting, so we essentially burn -$35k (-$3k/month) during the year but recoup and invest the bonus at year-end. However, we’re considering buying a house which would increase our monthly cash burn to -$15k/month or more.

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The question is less about “is this possible” and more about personal experiences doing such. The idea of drawing -$15k/month gives me some anxiety – even -$3k/month sometimes bothered me. We have some NW cushion / savings so in theory should never be 100% pinched liquidity-wise. But it’s still daunting.